英语语法体系完全指南：从零基础到精通

标签： 英语、语法、学习、教育、教程
适用对象： 英语学习者、备考学生、英语教师、自学者
阅读建议： 本文可作为语法参考手册，建议按章节系统学习，也可按需查阅特定语法点。

1. 英语字母与发音体系

1.1 26个英文字母

英语采用拉丁字母体系，共26个字母，分为大写（Uppercase）和小写（Lowercase）两种形式：

大写：A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
小写：a b c d e f g h i j k l m n o p q r s t u v w x y z

1.2 元音与辅音

类别	字母	数量	说明
元音字母	A, E, I, O, U	5个	可独立发音，是音节的核心
半元音	Y, W	2个	有时作元音使用，如 happy /ˈhæpi/
辅音字母	其余字母	21个	发音时气流受到阻碍

元音字母发音规则：
- 开音节（以元音结尾）：字母发本音，如 me /miː/, go /ɡəʊ/
- 闭音节（以辅音结尾）：字母发短音，如 cat /kæt/, bed /bed/
- 字母组合：如 ea 在 read 中发 /iː/，在 bread 中发 /e/

1.3 国际音标（IPA）体系

英语音标是记录发音的符号系统，分为元音和辅音两大类。

1.3.1 元音音标（20个）

类型	音标	示例	中文近似
单元音（12个）
前元音	/iː/	see /siː/	“衣”（长）
	/ɪ/	sit /sɪt/	“衣”（短）
	/e/	bed /bed/	“哎”
	/æ/	cat /kæt/	“爱”（开口大）
中元音	/ɜː/	bird /bɜːd/	“厄”（长）
	/ə/	about /əˈbaʊt/	“厄”（轻读）
	/ʌ/	cup /kʌp/	“阿”
后元音	/ɑː/	car /kɑː/	“啊”（长）
	/ɒ/	hot /hɒt/	“奥”（英）
	/ɔː/	door /dɔː/	“奥”（长）
	/ʊ/	put /pʊt/	“乌”（短）
	/uː/	food /fuːd/	“乌”（长）
双元音（8个）
合口双元音	/eɪ/	day /deɪ/	“诶”
	/aɪ/	my /maɪ/	“爱”
	/ɔɪ/	boy /bɔɪ/	“奥衣”
	/aʊ/	now /naʊ/	“奥”
	/əʊ/	go /ɡəʊ/	“欧”
集中双元音	/ɪə/	ear /ɪə/	“衣厄”
	/eə/	air /eə/	“爱厄”
	/ʊə/	tour /tʊə/	“乌厄”

1.3.2 辅音音标（28个）

类型	音标	示例	发音方法
爆破音（6个）	/p/	pen /pen/	双唇爆破
	/b/	book /bʊk/	双唇爆破（浊）
	/t/	tea /tiː/	齿龈爆破
	/d/	dog /dɒɡ/	齿龈爆破（浊）
	/k/	cat /kæt/	软腭爆破
	/ɡ/	go /ɡəʊ/	软腭爆破（浊）
摩擦音（10个）	/f/	fine /faɪn/	唇齿摩擦
	/v/	very /ˈveri/	唇齿摩擦（浊）
	/θ/	think /θɪŋk/	齿间摩擦
	/ð/	this /ðɪs/	齿间摩擦（浊）
	/s/	see /siː/	齿龈摩擦
	/z/	zoo /zuː/	齿龈摩擦（浊）
	/ʃ/	she /ʃiː/	龈后摩擦
	/ʒ/	measure /ˈmeʒə/	龈后摩擦（浊）
	/h/	he /hiː/	声门摩擦
	/r/	red /red/	齿龈近音
破擦音（6个）	/tʃ/	child /tʃaɪld/	破擦音
	/dʒ/	job /dʒɒb/	破擦音（浊）
	/tr/	tree /triː/	破擦音
	/dr/	draw /drɔː/	破擦音（浊）
	/ts/	cats /kæts/	破擦音
	/dz/	beds /bedz/	破擦音（浊）
鼻音（3个）	/m/	me /miː/	双唇鼻音
	/n/	no /nəʊ/	齿龈鼻音
	/ŋ/	sing /sɪŋ/	软腭鼻音
舌侧音（1个）	/l/	let /let/	齿龈边音
半元音（2个）	/j/	yes /jes/	硬腭近音
	/w/	we /wiː/	双唇软腭近音

1.4 音节与重音

音节（Syllable）是发音的基本单位，通常包含一个元音音素。

重音规则：
- 双音节词：名词/形容词重音在首音节，动词重音在次音节
  - 名词：'record /ˈrekɔːd/（记录）
  - 动词：re'cord /rɪˈkɔːd/（录制）
- 多音节词：重音位置需记忆，通常有主次重音之分

2. 词性体系（Parts of Speech）

英语词性分为10大类，每类词在句子中扮演不同角色。

2.1 名词（Noun）

表示人、事物、地点、概念等名称的词。

2.1.1 名词分类

分类标准	类型	示例	说明
可数性	可数名词	book, student, city	有单复数形式
	不可数名词	water, information, love	无复数形式
指代性	专有名词	China, Monday, John	首字母大写
	普通名词	country, day, person	泛指一类
意义	具体名词	table, dog, mountain	可感知实体
	抽象名词	happiness, freedom, idea	抽象概念
	集体名词	team, family, government	表示集合
性别	阳性	boy, actor, king	男性
	阴性	girl, actress, queen	女性
	通性	teacher, doctor, friend	不分性别

2.1.2 名词的数

规则	单数	复数	说明
一般规则	cat	cats	加 -s
以 s/x/ch/sh 结尾	box	boxes	加 -es
以辅音+y 结尾	baby	babies	变 y 为 i 加 -es
以 f/fe 结尾	knife	knives	变 f/fe 为 v 加 -es
不规则变化	man	men	需记忆
单复同形	sheep	sheep	不变
外来词	criterion	criteria	保留原语言复数形式

2.1.3 名词所有格

's 所有格：
- 单数名词：Tom's book（汤姆的书）
- 复数名词：students' classroom（学生们的教室）
- 复合名词：my mother-in-law's house（我岳母的房子）

of 所有格：
- the roof of the house（房子的屋顶）
- the name of the book（书的名字）

2.2 动词（Verb）

表示动作或状态的词，是句子的核心。

2.2.1 动词分类

类型	示例	说明
实义动词	run, eat, think	有完整词义，能独立作谓语
系动词	be, become, seem	连接主语和表语
助动词	do, have, will	协助构成时态、语态、语气
情态动词	can, may, must	表示能力、许可、义务等
及物动词	buy, make, love	需接宾语
不及物动词	sleep, arrive, exist	无需接宾语
延续性动词	live, work, study	动作可持续
瞬间动词	die, start, stop	动作瞬间完成

2.2.2 常见不规则动词表

原形	过去式	过去分词	含义
be	was/were	been	是
begin	began	begun	开始
break	broke	broken	打破
bring	brought	brought	带来
build	built	built	建造
buy	bought	bought	买
catch	caught	caught	抓住
choose	chose	chosen	选择
come	came	come	来
do	did	done	做
draw	drew	drawn	画
drink	drank	drunk	喝
drive	drove	driven	驾驶
eat	ate	eaten	吃
fall	fell	fallen	落下
feel	felt	felt	感觉
find	found	found	找到
fly	flew	flown	飞
forget	forgot	forgotten	忘记
get	got	got/gotten	得到
give	gave	given	给
go	went	gone	去
grow	grew	grown	生长
have	had	had	有
know	knew	known	知道
leave	left	left	离开
make	made	made	制作
meet	met	met	遇见
read	read	read	读
run	ran	run	跑
say	said	said	说
see	saw	seen	看见
speak	spoke	spoken	讲
take	took	taken	拿
teach	taught	taught	教
tell	told	told	告诉
think	thought	thought	想
write	wrote	written	写

2.3 形容词（Adjective）

修饰名词，表示人或事物的性质、状态、特征。

2.3.1 形容词分类

类型	示例	说明
性质形容词	beautiful, tall, kind	描述性质
数量形容词	many, few, several	表示数量
指示形容词	this, that, these, those	指示特定对象
疑问形容词	what, which, whose	用于提问
分词形容词	interesting, bored, broken	由分词转化
复合形容词	well-known, hard-working	由多个词组成

2.3.2 形容词比较级和最高级

级别	规则	示例	说明
原级	—	tall, beautiful, good	基础形式
比较级	单音节：+er	taller	两者比较
	多音节：more +	more beautiful
	不规则	better, worse
最高级	单音节：+est	tallest	三者及以上比较
	多音节：most +	most beautiful
	不规则	best, worst

比较级常用句型：
- A + be + 比较级 + than + B
  She is taller than her sister.
- 比较级 + and + 比较级（越来越...）
  It's getting colder and colder.
- the + 比较级..., the + 比较级...（越...越...）
  The more you read, the more you know.

2.4 副词（Adverb）

修饰动词、形容词、其他副词或整个句子，表示时间、地点、方式、程度等。

2.4.1 副词分类

类型	示例	说明
时间副词	now, yesterday, soon, already	表示时间
地点副词	here, there, everywhere, outside	表示地点
方式副词	quickly, well, carefully, hard	表示方式
程度副词	very, quite, extremely, too	表示程度
频率副词	always, often, sometimes, never	表示频率
疑问副词	when, where, why, how	用于提问
连接副词	however, therefore, moreover	连接句子
观点副词	frankly, luckily, obviously	表达观点

2.4.2 副词的位置

- 动词后：She speaks English fluently.
- 形容词/副词前：He is very tall. / She runs quite fast.
- 句首/句末：Yesterday, I met him. / I met him yesterday.
- 助动词与实义动词之间：I have never seen such a thing.
- be 动词后：He is always late.

2.5 冠词（Article）

置于名词前，限定名词的范围。

冠词	形式	用法	示例
不定冠词	a / an	泛指“一个”	a book, an apple
定冠词	the	特指“这个/那个”	the sun, the book
零冠词	—	不用冠词	China, water, play football

2.5.1 不定冠词用法

a 用于辅音音素开头的词：a university /juː/，a European
an 用于元音音素开头的词：an hour /aʊ/，an honest man

用法：
- 首次提到的人或物：I saw a dog in the park.
- 表示"一个"：I have a brother.
- 表示"每一"：twice a week
- 固定搭配：have a cold, take a walk

2.5.2 定冠词用法

- 特指的人或物：The book on the desk is mine.
- 双方都知道的人或物：Close the door, please.
- 上文提到过的人或物：I bought a book. The book is interesting.
- 世界上独一无二的事物：the sun, the moon, the earth
- 序数词和最高级前：the first day, the tallest boy
- 乐器前：play the piano
- 江河、海洋、山脉等：the Yangtze River, the Pacific Ocean
- 形容词表一类人：the rich, the poor, the old
- 姓氏复数表一家人：the Smiths

2.5.3 零冠词用法

- 专有名词：China, Beijing, Monday
- 抽象名词：Love is blind.
- 物质名词：Water is essential for life.
- 泛指的复数名词：Dogs are loyal animals.
- 球类运动：play basketball, play football
- 学科名称：study English, learn math
- 三餐名称：have breakfast, after lunch
- 交通工具（by）：by bus, by train, by air
- 称呼、头衔：President Lincoln, Doctor Smith

2.6 介词（Preposition）

表示名词/代词与其他词之间的关系，通常置于名词或代词前。

2.6.1 常见介词分类

类型	介词	示例
时间	at, on, in, before, after, during, for, since, by, until	at 3 o’clock, on Monday, in 2024
地点	at, in, on, under, over, above, below, between, among, behind, in front of	at school, in the box, under the table
方向	to, into, out of, through, across, along, up, down, past	go to school, walk across the street
方式	by, with, without, like	by bus, with a knife
原因	because of, due to, for, from	die from cancer
关于	about, on, of	a book about history

2.6.2 时间介词详解

介词	用法	示例
at	具体时刻、年龄、节日	at 6:00, at noon, at Christmas, at the age of 20
on	具体日期、星期、某天的上下午	on Monday, on June 1st, on a cold morning
in	较长时段（年、月、季节、世纪）	in 2024, in July, in summer, in the morning
for	持续一段时间	for three hours, for two weeks
since	从某时开始（至今）	since 2020, since last Monday
before	在…之前	before 10 o’clock
after	在…之后	after class
during	在…期间	during the holiday
by	到…为止	by Friday, by the end of this month
until/till	直到…	until tomorrow

2.7 连词（Conjunction）

连接单词、短语、从句或句子。

2.7.1 连词分类

类型	连词	功能	示例
并列连词	and, but, or, so, for, yet, nor	连接同等成分	I like tea and coffee.
从属连词	because, if, when, although, since, while, before, after, until, unless	引导从句	I’ll go if it doesn’t rain.
关联连词	both…and, either…or, neither…nor, not only…but also	成对使用	Both Tom and Jerry came.
转折连词	however, nevertheless, although, though, yet, but	表示转折	It was raining; however, we went out.

2.8 代词（Pronoun）

代替名词或名词短语的词。

2.8.1 代词分类表

类型	人称代词	物主代词	反身代词	指示代词	疑问代词	不定代词	关系代词
单数	I, you, he, she, it	my, your, his, her, its	myself, yourself, himself, herself, itself	this, that	who, whom, whose, what, which	some, any, no, every, each, either, neither, none, one, all, both, few, little, many, much, other, another	who, whom, whose, which, that, what
复数	we, you, they	our, your, their	ourselves, yourselves, themselves	these, those

2.8.2 代词用法示例

人称代词：
- 主格：I love you. / She is a doctor.
- 宾格：He saw me. / Give it to him.

物主代词：
- 形容词性：my book, your car, his house
- 名词性：The book is mine. / Yours is better.

反身代词：
- I taught myself English.
- She made herself a cup of tea.
- Enjoy yourself!（固定搭配）

指示代词：
- This is my pen. / That is yours.
- These are apples. / Those are oranges.

不定代词：
- Some people like coffee; others prefer tea.
- Everyone has his own idea.
- Neither of them is right.

2.9 感叹词（Interjection）

表示强烈感情的词，独立于句子之外。

感叹词	含义	示例
Oh!	惊讶、痛苦	Oh! I didn’t know that.
Ah!	满意、愉快	Ah! That’s wonderful!
Ouch!	疼痛	Ouch! That hurts!
Wow!	惊奇	Wow! What a beautiful view!
Hey!	招呼、警告	Hey! Wait for me!
Hooray!	欢呼	Hooray! We won!
Alas!	悲伤、遗憾	Alas! He is gone.
Well!	犹豫、让步	Well, I don’t know.
Hmm!	思考	Hmm, let me think.

2.10 数词（Numeral）

表示数目或顺序的词。

2.10.1 基数词与序数词

基数词	序数词	缩写	含义
one	first	1st	第一
two	second	2nd	第二
three	third	3rd	第三
four	fourth	4th	第四
five	fifth	5th	第五
six	sixth	6th	第六
seven	seventh	7th	第七
eight	eighth	8th	第八
nine	ninth	9th	第九
ten	tenth	10th	第十
eleven	eleventh	11th	第十一
twelve	twelfth	12th	第十二
thirteen	thirteenth	13th	第十三
twenty	twentieth	20th	第二十
twenty-one	twenty-first	21st	第二十一
one hundred	one hundredth	100th	第一百
one thousand	one thousandth	1000th	第一千

2.10.2 数词用法

基数词用法：
- 表示数量：three books, twenty students
- 表示年份：in 2024, in 1999
- 表示时间：at six o'clock
- 表示编号：Room 305, Bus No. 10

序数词用法：
- 表示顺序：the first day, the second floor
- 与不定冠词连用：a second chance（再一次）

分数：
- 1/2：one half / a half
- 1/3：one third / a third
- 2/3：two thirds
- 1/4：one quarter / a quarter
- 3/4：three quarters

小数：
- 0.5：zero point five / point five
- 3.14：three point one four

百分数：
- 50%：fifty percent
- 100%：one hundred percent

3. 句子成分

句子成分是根据词在句中的作用划分的。英语句子通常由以下成分组成：

3.1 主语（Subject）

表示句子叙述的主体，即“谁”或“什么”。

主语类型：
- 名词：The dog is sleeping.
- 代词：She loves music.
- 数词：Three is enough.
- 不定式：To learn English is important.
- 动名词：Swimming is good exercise.
- 从句：What he said is true.
- 名词短语：The tall boy in blue is my brother.

3.2 谓语（Predicate）

说明主语的动作或状态，由动词充当。

谓语类型：
- 简单谓语（一个动词）：He runs fast.
- 复合谓语（多个动词）：She can sing and dance.
- 动词短语：I have been waiting for an hour.

3.3 宾语（Object）

表示动作的对象或承受者。

宾语类型：
- 直接宾语：I bought a book.（买的是什么）
- 间接宾语：I gave him a book.（给谁）
- 双宾语：She told me a story.（me 间接宾语，a story 直接宾语）
- 介词宾语：He is looking at me.

3.4 定语（Attribute）

修饰名词或代词，限定其范围。

定语位置：
- 前置定语：
  - 形容词：a beautiful flower
  - 代词：my book
  - 数词：three students
  - 名词：a stone bridge
  - 分词：a sleeping baby, a broken cup
- 后置定语：
  - 形容词：something important
  - 副词：the way out
  - 介词短语：the man in the car
  - 不定式：a chance to win
  - 分词短语：the girl standing there
  - 定语从句：the book that I bought

3.5 状语（Adverbial）

修饰动词、形容词、副词或整个句子，说明时间、地点、方式、原因、目的、结果、条件、让步、程度等。

状语类型：
- 时间状语：I met him yesterday.
- 地点状语：She lives in Beijing.
- 方式状语：He speaks loudly.
- 原因状语：I stayed home because I was sick.
- 目的状语：He came to help you.
- 结果状语：He ran so fast that I couldn't catch up.
- 条件状语：If it rains, I'll stay home.
- 让步状语：Although he is young, he knows a lot.
- 程度状语：I am very happy.
- 伴随状语：She sat there, reading a book.

3.6 补语（Complement）

补充说明主语或宾语的成分。

补语类型：
- 主语补足语（表语）：
  She is a teacher.（名词）
  The flower smells sweet.（形容词）
  He seems happy.（形容词）

- 宾语补足语：
  We elected him president.（名词）
  I found the book interesting.（形容词）
  I saw him run.（省略 to 的不定式）
  I heard her singing.（现在分词）

3.7 表语（Predicative）

位于系动词后，说明主语的身份、特征、状态。

表语类型：
- 名词：He is a doctor.
- 形容词：The soup is delicious.
- 代词：This is mine.
- 数词：He is fourteen.
- 不定式：My goal is to win.
- 动名词：Her hobby is dancing.
- 介词短语：The book is on the table.
- 从句：The problem is that we don't have time.

3.8 同位语（Appositive）

对前面的名词或代词作进一步解释、说明。

同位语示例：
- My friend Tom is coming.（Tom 是 friend 的同位语）
- We students should study hard.（students 是 We 的同位语）
- The news that he won surprised us.（that 从句作 news 的同位语）
- Beijing, the capital of China, is a beautiful city.

4. 句子类型

4.1 按结构分类

类型	定义	示例	说明
简单句	只有一个主谓结构	I love you.	可含多个并列成分
并列句	两个或以上独立分句，用并列连词连接	I like tea, but she prefers coffee.	分句间地位平等
复合句	一个主句 + 一个或以上从句	I know that he is honest.	从句依附于主句
复杂句	包含并列和从属关系	He said he would come, but he didn’t.	最复杂的结构

4.2 简单句的五种基本句型

句型一：主语 + 谓语（不及物动词）
  The sun rises.
  Birds fly.

句型二：主语 + 谓语（及物动词）+ 宾语
  I love music.
  She reads books.

句型三：主语 + 谓语 + 间接宾语 + 直接宾语
  He gave me a pen.
  She told us a story.

句型四：主语 + 谓语 + 宾语 + 宾语补足语
  We made him captain.
  I found the door open.

句型五：主语 + 系动词 + 表语
  He is a student.
  The flower looks beautiful.

4.3 按用途分类

类型	定义	示例	标点
陈述句	陈述事实或观点	She is a doctor.	句号
疑问句	提出问题	Are you ready?	问号
祈使句	表示命令、请求、建议	Open the door.	句号/感叹号
感叹句	表达强烈感情	What a beautiful day!	感叹号

5. 时态体系

英语时态由“时间”和“状态”两个维度构成，共16种时态。

5.1 时态总览表

	一般	进行	完成	完成进行
现在	一般现在时	现在进行时	现在完成时	现在完成进行时
过去	一般过去时	过去进行时	过去完成时	过去完成进行时
将来	一般将来时	将来进行时	将来完成时	将来完成进行时
过去将来	一般过去将来时	过去将来进行时	过去将来完成时	过去将来完成进行时

5.2 现在时态（4种）

5.2.1 一般现在时

结构：主语 + 动词原形（第三人称单数加 -s/-es）

用法：
- 表示经常性、习惯性动作：I get up at 6 every day.
- 表示客观事实、真理：The earth revolves around the sun.
- 表示现在的状态：He lives in Beijing.
- 用于时间表、时刻表：The train leaves at 8:00.
- 用于条件状语从句、时间状语从句：If it rains, I'll stay home.

5.2.2 现在进行时

结构：主语 + am/is/are + doing

用法：
- 表示现在正在进行的动作：She is reading now.
- 表示现阶段正在进行的动作：I am learning French this semester.
- 表示计划好的将来动作：I am meeting him tomorrow.
- 与 always 连用表示感情色彩：He is always complaining.

注意：
- 状态动词一般不用进行时：know, love, believe, have（有）
- 但 have 表示"进行"时可用：We are having a meeting.

5.2.3 现在完成时

结构：主语 + have/has + done

用法：
- 表示过去动作对现在的影响：I have lost my keys.（现在还没找到）
- 表示从过去持续到现在的动作：I have lived here for 10 years.
- 表示经历：Have you ever been to Paris?
- 表示最近完成的动作：I have just finished my homework.

时间状语：already, yet, just, ever, never, since, for, so far, up to now

注意：
- 不能与表示过去的时间状语连用（yesterday, last week, in 2020）
- have been to（去过已回）vs have gone to（去了未回）

5.2.4 现在完成进行时

结构：主语 + have/has + been + doing

用法：
- 表示从过去持续到现在的动作（强调持续性）：
  I have been waiting for two hours.（还在等）
- 表示反复进行的动作：
  He has been calling you all morning.

与现在完成时的区别：
- 完成时强调结果：I have read the book.（读完了）
- 完成进行时强调过程：I have been reading the book.（一直在读）

5.3 过去时态（4种）

5.3.1 一般过去时

结构：主语 + 动词过去式

用法：
- 表示过去某时发生的动作：I met him yesterday.
- 表示过去习惯性的动作：When I was young, I played football every day.
- 表示过去的状态：He was a teacher then.

时间状语：yesterday, last week, ago, in 2020, just now

5.3.2 过去进行时

结构：主语 + was/were + doing

用法：
- 表示过去某时正在进行的动作：I was reading at 8 o'clock last night.
- 表示过去某时背景动作：While I was walking, I saw an accident.
- 与 when 从句连用：I was sleeping when he called.
- 表示委婉请求：I was wondering if you could help me.

5.3.3 过去完成时

结构：主语 + had + done

用法：
- 表示"过去的过去"：When I arrived, the train had already left.
- 用于虚拟语气：If I had known, I would have told you.
- 用于 hardly...when, no sooner...than：
  Hardly had I arrived when it began to rain.

5.3.4 过去完成进行时

结构：主语 + had + been + doing

用法：
- 表示过去某时之前一直在进行的动作：
  I had been waiting for an hour before he came.
- 强调动作的持续性：
  She was tired because she had been working all day.

5.4 将来时态（4种）

5.4.1 一般将来时

结构：
- will + do（主观意愿、临时决定）
- be going to + do（计划、打算、有迹象）
- be + doing（计划好的将来）
- be to + do（安排、命令、命运）
- 一般现在时（时间表、时刻表）

用法：
- will：I will help you.（我愿意）/ It will rain.（预测）
- be going to：I am going to study medicine.（计划）/ Look at the clouds! It's going to rain.（有迹象）
- be doing：I am leaving tomorrow.（已安排）
- be to do：You are to finish this by Friday.（命令）

5.4.2 将来进行时

结构：主语 + will + be + doing

用法：
- 表示将来某时正在进行的动作：I will be working at 8 tomorrow.
- 表示将来必然发生的动作：I will be seeing him tomorrow anyway.
- 委婉询问：Will you be using the car this evening?

5.4.3 将来完成时

结构：主语 + will + have + done

用法：
- 表示将来某时之前已完成的动作：
  By next year, I will have graduated.
- 用于时间状语 by + 将来时间：
  By the time you arrive, I will have finished.

5.4.4 将来完成进行时

结构：主语 + will + have + been + doing

用法：
- 表示将来某时之前一直在进行的动作：
  By next summer, I will have been working here for 5 years.

5.5 过去将来时态（4种）

过去将来时态用于表示从过去某时看将要发生的动作，常用于宾语从句中。

一般过去将来时：would + do / was going to + do
  He said he would come.
  I knew she was going to leave.

过去将来进行时：would + be + doing
  He said he would be waiting for me.

过去将来完成时：would + have + done
  He said he would have finished by 5 o'clock.

过去将来完成进行时：would + have + been + doing
  He said he would have been working for 10 hours by then.

6. 语态

6.1 主动语态与被动语态

语态	定义	示例
主动语态	主语是动作的执行者	Tom wrote the book.
被动语态	主语是动作的承受者	The book was written by Tom.

6.2 被动语态的构成

基本结构：be + done（过去分词）

各时态的被动语态：
- 一般现在时：am/is/are + done
  English is spoken all over the world.
- 一般过去时：was/were + done
  The window was broken yesterday.
- 一般将来时：will be + done / be going to be + done
  The work will be finished tomorrow.
- 现在进行时：am/is/are + being + done
  The house is being built.
- 过去进行时：was/were + being + done
  The bridge was being repaired then.
- 现在完成时：have/has + been + done
  The letter has been sent.
- 过去完成时：had + been + done
  The work had been done before I came.
- 将来完成时：will + have + been + done
  Everything will have been finished by then.
- 含情态动词：情态动词 + be + done
  The book must be returned today.

6.3 被动语态的使用

使用场景：
- 不知道动作执行者：My bike was stolen.
- 不必指出动作执行者：The book has been translated into many languages.
- 强调动作承受者：The window was broken by Tom.
- 客观陈述：It is believed that... / It is said that...

注意：
- 主动语态变被动语态时，宾语变主语，主语变 by 短语（可省略）
- 双宾语动词有两个被动形式：
  He gave me a book. → I was given a book. / A book was given to me.
- 感官动词、使役动词在主动语态中接省略 to 的不定式，被动语态要还原 to：
  I saw him run. → He was seen to run.
- 不及物动词、系动词无被动语态：happen, take place, belong to, become

7. 语气

语气表示说话人对动作或状态的看法和态度。

7.1 陈述语气（Indicative Mood）

表示事实或可能发生的事情。

- 肯定：She is a teacher.
- 否定：He doesn't like coffee.
- 疑问：Do you speak English?

7.2 祈使语气（Imperative Mood）

表示命令、请求、建议、劝告等。

- 肯定祈使句：Open the door. / Be quiet.
- 否定祈使句：Don't be late. / Never give up.
- 加强语气：Do come in. / Do be careful.
- 礼貌请求：Please sit down. / Have a seat.
- 以 let 开头：Let's go. / Let him try.
- 无动词祈使句：No smoking. / No parking.

7.3 虚拟语气（Subjunctive Mood）

表示与事实相反、不太可能实现的愿望、假设等。

7.3.1 虚拟语气在条件句中的用法

类型	条件从句	主句	示例
与现在事实相反	过去式（be 用 were）	would/should/could/might + do	If I were you, I would accept.
与过去事实相反	had + done	would/should/could/might + have done	If I had known, I would have told you.
与将来事实相反	should + do / were to + do / 过去式	would/should/could/might + do	If it should rain, I would stay home.

7.3.2 虚拟语气的其他用法

1.  wish 后的宾语从句
   - 与现在相反：I wish I were rich.（我现在不富有）
   - 与过去相反：I wish I had studied harder.（过去没努力）
   - 与将来相反：I wish he would come tomorrow.（不太可能来）

2.  would rather / sooner 后的从句
   - 与现在/将来相反：I'd rather you didn't smoke here.
   - 与过去相反：I'd rather you hadn't done that.

3.  as if / as though 后的从句
   - 与现在相反：He talks as if he knew everything.
   - 与过去相反：He looks as if he had seen a ghost.

4.  It's time (that)... 句型
   - It's time we went home.（该回家了，但还没走）
   - It's high time you started working.

5.  suggest, demand, order, insist 等后的宾语从句（should 型虚拟）
   - I suggest that he (should) come early.
   - It is necessary that he (should) be punished.
   - 注意：insist 表示"坚持认为"时用陈述语气，表示"坚持要求"时用虚拟语气

6.  lest, for fear that, in case 后的从句
   - He ran lest he (should) be caught.

7.  If only...（要是...就好了）
   - If only I were young again!
   - If only I had listened to you!

8. 非谓语动词

非谓语动词是指在句中不作谓语的动词形式，包括不定式、动名词和分词。

8.1 不定式（Infinitive）

8.1.1 不定式形式

形式	主动	被动	示例
一般式	to do	to be done	I want to go.
进行式	to be doing	—	He seems to be sleeping.
完成式	to have done	to have been done	I am glad to have met you.
完成进行式	to have been doing	—	He is said to have been working all night.

8.1.2 不定式用法

作主语：
  To learn English is important.
  It is important to learn English.（it 作形式主语）

作宾语：
  I want to leave.
  I find it hard to believe.（it 作形式宾语）

作宾语补足语：
  I want you to go.
  I saw him run.（感官动词后省略 to）
  I made him laugh.（使役动词后省略 to）
  He was seen to run.（被动语态还原 to）

作定语：
  I have a letter to write.
  He is always the first to come and the last to leave.

作状语：
  I came here to see you.（目的）
  He is too young to go to school.（结果）
  I am glad to see you.（原因）

作表语：
  My goal is to win.
  To see is to believe.

疑问词 + 不定式：
  I don't know what to do.
  Can you tell me how to get there?

8.2 动名词（Gerund）

8.2.1 动名词形式

形式	主动	被动	示例
一般式	doing	being done	I enjoy swimming.
完成式	having done	having been done	I regret having said that.

8.2.2 动名词用法

作主语：
  Swimming is good exercise.
  It is no use crying over spilt milk.

作宾语：
  I enjoy reading.
  He admitted making a mistake.

作介词宾语：
  I am interested in learning English.
  Thank you for coming.

作定语：
  a swimming pool（游泳池）
  a reading room（阅览室）

作表语：
  My hobby is collecting stamps.

8.2.3 动名词与不定式作宾语的区别

动词	接动名词	接不定式	区别
remember	remember doing（记得做过）	remember to do（记得去做）	动作先后
forget	forget doing（忘了做过）	forget to do（忘了去做）	动作先后
stop	stop doing（停止正在做的事）	stop to do（停下来去做另一件事）	动作变化
try	try doing（试着做，看效果）	try to do（努力做）	语义不同
regret	regret doing（后悔做过）	regret to do（遗憾地要做）	情感不同
mean	mean doing（意味着）	mean to do（打算做）	语义不同
go on	go on doing（继续做同一件事）	go on to do（接着做另一件事）	动作连续性

8.3 分词（Participle）

8.3.1 分词形式

形式	现在分词	过去分词
一般式	doing	done
完成式	having done	having been done

8.3.2 现在分词与过去分词的区别

特征	现在分词	过去分词
语态	主动	被动
时态	正在进行	已完成
示例	a sleeping baby（正在睡的婴儿）	a broken cup（被打破的杯子）
	boiling water（正在沸腾的水）	boiled water（已烧开的水）

8.3.3 分词用法

作定语：
  - 前置：a developing country, a developed country
  - 后置：the man standing there, the problem discussed yesterday

作表语：
  The news is exciting.（现在分词，修饰物）
  I am excited.（过去分词，修饰人）

作宾语补足语：
  I saw him crossing the street.（主动进行）
  I had my hair cut.（被动完成）
  I kept him waiting.（主动进行）

作状语：
  - 时间：Walking in the park, I met an old friend. = When I was walking...
  - 原因：Being tired, I went to bed early. = Because I was tired...
  - 条件：Working hard, you will succeed. = If you work hard...
  - 伴随：He sat there, reading a newspaper.
  - 结果：The bus was caught in a traffic jam, causing the delay.
  - 让步：Although living far away, he comes to visit often.

独立主格结构：
  Weather permitting, we'll have a picnic.
  = If weather permits...
  All things considered, his plan is better.

9. 从句体系

从句（Clause）是包含主语和谓语的结构，不能独立成句，需依附于主句。

9.1 名词性从句

在句中充当名词作用的从句，包括主语从句、宾语从句、表语从句、同位语从句。

9.1.1 主语从句

结构：从句 + 谓语 + 其他

引导词：
- that（无意义，不省略）：That he will come is certain.
- whether（是否）：Whether he will come is uncertain.
- 疑问词：What he said is true. / Who will go is not decided.

it 作形式主语：
- It is certain that he will come.
- It is important that we (should) learn English.
- It is a pity that he can't come.
- It depends on whether he has time.

9.1.2 宾语从句

结构：主语 + 谓语 + 从句

引导词：
- that（可省略）：I know (that) he is honest.
- whether/if（是否）：I don't know whether/if he will come.
- 疑问词：I wonder what he wants. / Ask him where he lives.

注意：
- 宾语从句用陈述语序：I don't know where he is.（不是 where is he）
- 时态呼应：主句过去时，从句用相应过去时态
  He said he was tired.（原话：I am tired.）
- 客观真理用一般现在时：He said the earth is round.
- 介词后一般只用 whether，不用 if：It depends on whether he comes.

9.1.3 表语从句

结构：主语 + 系动词 + 从句

引导词：
- that（一般不省略）：The problem is that we don't have time.
- whether（不用 if）：The question is whether he will come.
- 疑问词：This is what I want. / That is where he lives.

注意：
- The reason... is that...（不用 because）
  The reason why he was late is that he missed the bus.

9.1.4 同位语从句

结构：名词 + 同位语从句

常用名词：fact, news, idea, belief, hope, doubt, truth, problem, question

引导词：
- that（不省略）：I have no doubt that he will succeed.
- whether（不用 if）：There is some question whether he will come.
- 疑问词：I have no idea what he wants.

与定语从句的区别：
- 同位语从句：that 在从句中不作成分，只起连接作用
  The news that he won surprised us.（他赢了，这就是新闻的内容）
- 定语从句：that 在从句中作成分（主语、宾语等）
  The news that he told me surprised us.（他告诉我的那个新闻）

9.2 定语从句（形容词性从句）

修饰名词或代词的从句。

9.2.1 关系词

关系词	先行词	在从句中作用	示例
who	人	主语	The man who is talking is my teacher.
whom	人	宾语	The man whom I met is my teacher.
whose	人/物	定语	The man whose car was stolen reported to the police.
which	物	主语/宾语	The book which is on the desk is mine.
that	人/物	主语/宾语	The man that I saw is Tom.
when	时间	时间状语	I remember the day when we first met.
where	地点	地点状语	This is the house where I was born.
why	reason	原因状语	That’s the reason why he left.

9.2.2 限制性定语从句与非限制性定语从句

特征	限制性定语从句	非限制性定语从句
作用	限定先行词，去掉则句意不明	补充说明，去掉不影响句意
逗号	不用逗号隔开	用逗号隔开
that	可用	不可用
翻译	常译作定语	常译作并列句
示例	The man who is talking is my teacher.（限定“哪个男人”）	My father, who is 60, is still working.（补充说明父亲的情况）

9.2.3 定语从句注意事项

1. 关系代词的选择：
   - 先行词是人：who/whom/that/whose
   - 先行词是物：which/that/whose
   - 先行词既有人又有物：that
   - 介词后指人用 whom，指物用 which：the man with whom I talked

2. 关系代词省略：
   - 在限制性定语从句中，关系代词作宾语时可省略
     The man (whom/that) I met is Tom.

3. 只用 that 的情况：
   - 先行词是 all, everything, nothing, something, anything, little, much
   - 先行词被 all, every, no, some, any, the only, the very, the same 修饰
   - 先行词是序数词或最高级修饰
   - 先行词既有人又有物
   - 主句是以 who/which 开头的疑问句

4. 只用 which 的情况：
   - 非限制性定语从句
   - 介词后

5. 介词 + 关系代词：
   - This is the house in which I lived. = This is the house (which/that) I lived in.
   - 注意：介词前移时只能用 which/whom，不能用 that

9.3 状语从句

修饰主句中的动词、形容词、副词或整个句子，表示时间、地点、原因、目的、结果、条件、让步、方式、比较等。

9.3.1 时间状语从句

连词	含义	示例
when	当…时	When I came in, he was reading.
while	当…时（强调同时进行）	While I was reading, he was watching TV.
as	一边…一边…	As I walked, I sang.
before	在…之前	Before I left, I said goodbye.
after	在…之后	After he finished, he went home.
since	自从…	I have lived here since I was born.
until/till	直到…	Wait until I come back.
as soon as	一…就…	As soon as I arrived, I called you.
the moment	一…就…	The moment I saw him, I knew.
every time	每次…	Every time I see her, she smiles.

注意：时间状语从句中，主句将来时，从句用一般现在时
  I'll call you when I arrive.（不是 when I will arrive）

9.3.2 地点状语从句

连词	含义	示例
where	在…地方	Put it where you can find it.
wherever	无论哪里	Wherever you go, I’ll follow.
everywhere	每个…地方	Everywhere he went, he was welcome.

9.3.3 原因状语从句

连词	含义	语气	示例
because	因为	最强，直接原因	I stayed home because I was sick.
since	既然	较弱，已知原因	Since you’re busy, I’ll leave.
as	由于	较弱，明显原因	As it was raining, we stayed home.
now that	既然	已知原因	Now that you’re here, let’s start.
for	因为	补充说明，不用于句首	He must be ill, for he is absent.

9.3.4 目的状语从句

连词	含义	示例
so that	以便，为了	I spoke slowly so that he could understand.
in order that	为了	He worked hard in order that he might pass.
lest	以免（虚拟语气）	He ran fast lest he (should) be late.
for fear that	生怕	He left early for fear that he should miss the train.

注意：目的状语从句中常用 may/might, can/could
  I study hard so that I can pass the exam.

9.3.5 结果状语从句

连词	含义	示例
so…that	如此…以至于	He is so tall that he can reach the ceiling.
such…that	如此…以至于	It is such a good book that I can’t put it down.
so that	以至于（目的/结果）	He spoke clearly so that everyone understood.

so...that 与 such...that 的区别：
- so + 形容词/副词：so beautiful, so fast
- such + (a/an) + 形容词 + 名词：such a beautiful girl, such good books

9.3.6 条件状语从句

类型	连词	示例	说明
真实条件	if, unless, as long as, provided (that)	If it rains, I’ll stay home.	可能实现
虚拟条件	if	If I were you, I would go.	与事实相反

unless = if...not：
  Unless you work hard, you will fail. = If you don't work hard, you will fail.

as long as / so long as（只要）：
  As long as you try, you'll succeed.

on condition that（条件是）：
  I'll lend you the money on condition that you pay it back next month.

9.3.7 让步状语从句

连词	含义	示例
although/though	虽然	Although he is young, he knows a lot.
even if/though	即使	Even if it rains, I’ll go.
no matter + wh-	无论…	No matter what happens, I’ll stay.
wh-ever	无论…	Whatever you do, I’ll support you.
while	尽管（位于句首）	While I like him, I don’t trust him.

注意：although/though 不能与 but 连用，但可与 yet/still 连用
  Although he is poor, (yet) he is happy.

9.3.8 方式状语从句

连词	含义	示例
as	按照…方式	Do as I told you.
as if/as though	好像，仿佛	He talks as if he knew everything.
(in) the way (that)	以…方式	Do it the way (that) I showed you.

9.3.9 比较状语从句

连词	含义	示例
than	比…	He is taller than I (am).
as…as	和…一样	She is as tall as her mother.
not so/as…as	不如…	He is not so tall as his brother.
the more…the more	越…越…	The more you read, the more you know.

10. 特殊句式

10.1 倒装（Inversion）

将谓语的一部分或全部放在主语之前。

10.1.1 完全倒装

结构：谓语动词 + 主语

使用场景：
- 表示地点/方向的副词/介词短语置于句首：
  Here comes the bus. / There goes the bell.
  In front of the house stands a tall tree.

- 表语置于句首：
  Gone are the days when we were young.
  Present at the meeting were Professor Smith and his wife.

注意：主语是代词时不倒装：Here he comes.

10.1.2 部分倒装

结构：助动词/情态动词/be 动词 + 主语 + 动词

使用场景：
- 否定词/半否定词置于句首：
  Never have I seen such a beautiful sight.
  Hardly had I arrived when it began to rain.
  Not only did he finish the work, but he also helped others.
  Little did I know what was going to happen.

- only + 状语置于句首：
  Only then did I realize my mistake.
  Only by working hard can you succeed.

- so...that / such...that 中 so/such 置于句首：
  So fast did he run that I couldn't catch up.
  Such was his anger that he couldn't speak.

- 让步状语从句的倒装（as/though）：
  Child as/though he is, he knows a lot.
  Try as he might, he couldn't open the door.

- 虚拟条件句省略 if：
  Had I known, I would have told you. (= If I had known...)
  Were I you, I would accept. (= If I were you...)
  Should it rain, I would stay home. (= If it should rain...)

10.2 强调（Emphasis）

10.2.1 强调句型（It is/was…that/who…）

结构：It is/was + 被强调部分 + that/who + 其他

可强调成分：
- 主语：It was Tom who/that broke the window.
- 宾语：It was the window that Tom broke.
- 状语：It was yesterday that I met him.

注意：
- 强调人时可用 who/that，强调物时只能用 that
- 强调状语时只能用 that
- 不能强调谓语动词
- 去掉 It is/was...that... 后，句子应完整：
  Tom broke the window yesterday.（原句）
  It was Tom who broke the window yesterday.（强调主语）
  It was the window that Tom broke yesterday.（强调宾语）
  It was yesterday that Tom broke the window.（强调时间状语）

10.2.2 其他强调方式

- 助动词 do/does/did + 动词原形：
  Do come in. / I did finish my homework.

- 反身代词：
  I myself saw it. / The president himself came.

- what 从句：
  What I need is a good rest.

- 重复：
  He is a fool, a complete fool.

10.3 省略（Ellipsis）

10.3.1 常见省略情况

1. 省略主语（祈使句）：
   (You) Open the door.

2. 省略主语和助动词（口语）：
   (I've) Got to go now.
   (Are you) Coming?

3. 省略相同部分（并列句）：
   Tom is a doctor and Mary (is) a nurse.
   He likes tea, but I (like) coffee.

4. 省略从句中的相同成分：
   - 宾语从句：I know (that) he is honest.
   - 定语从句：The man (whom) I met is Tom.
   - 状语从句省略（主语一致且含 be 动词）：
     When (he was) young, he lived in Paris.
     If (it is) possible, come early.
     Though (he was) tired, he kept working.

5. 不定式省略：
   - 省略 to 后的动词（保留 to）：
     I don't want to go, but I have to (go).
   - 省略整个不定式：
     Would you like to come? I'd love to (come).

6. 介词省略：
   - He spent two hours (in) doing the work.
   - I have no difficulty (in) solving the problem.

10.4 独立主格（Absolute Construction）

由名词/代词 + 分词/形容词/副词/介词短语/不定式构成，在句中作状语，有自己的逻辑主语，与主句主语不同。

结构：名词/代词 + 分词/形容词/副词/介词短语/不定式

类型：
1. 名词/代词 + 现在分词：
   Weather permitting, we'll have a picnic.
   (= If weather permits...)

2. 名词/代词 + 过去分词：
   All things considered, his plan is better.
   (= If all things are considered...)

3. 名词/代词 + 不定式：
   Here are the first two volumes, the third one to come out next month.

4. 名词/代词 + 形容词：
   He sat in the chair, his eyes closed.

5. 名词/代词 + 副词：
   The meeting over, everyone went home.

6. 名词/代词 + 介词短语：
   Gun in hand, the soldier ran into the building.

7. with/without + 复合结构（独立主格的变体）：
   With the guide leading the way, we set off.
   Without a word more spoken, she left the room.

11. 疑问词体系

疑问词用于构成疑问句，包括疑问代词和疑问副词。

11.1 疑问词总表

疑问词	词性	含义	示例
who	代词	谁（主格）	Who is he?
whom	代词	谁（宾格）	Whom did you meet?
whose	代词	谁的	Whose book is this?
what	代词/形容词	什么	What is this? / What color is it?
which	代词/形容词	哪一个	Which do you prefer? / Which book is yours?
when	副词	何时	When did you arrive?
where	副词	何地	Where do you live?
why	副词	为何	Why are you late?
how	副词	如何	How do you do it?
how many	短语	多少（可数）	How many students are there?
how much	短语	多少（不可数）/多少钱	How much water do you need? / How much is it?
how long	短语	多久/多长	How long have you lived here? / How long is the bridge?
how far	短语	多远	How far is it from here?
how old	短语	多大年龄	How old are you?
how often	短语	多久一次	How often do you exercise?
how soon	短语	多久以后	How soon will you be back?
how fast	短语	多快	How fast can you run?
how tall	短语	多高	How tall is he?
what kind of	短语	什么样的	What kind of music do you like?
what time	短语	几点	What time is it?

11.2 疑问词详解

11.2.1 who / whom / whose

who（主格，作主语）：
  Who broke the window?（谁打破了窗户？）
  Who wants to come?（谁想来？）

whom（宾格，作宾语，正式）：
  Whom did you see?（你看见了谁？）
  To whom did you speak?（你和谁说话？）
  口语中常用 who 代替 whom：Who did you see?

whose（所有格，作定语）：
  Whose car is this?（这是谁的车？）
  Whose are these?（这些是谁的？）

11.2.2 what / which

what（无范围）：
  What is your favorite color?（你最喜欢什么颜色？）
  What do you want?（你想要什么？）

which（有范围）：
  Which color do you prefer, red or blue?（红色和蓝色，你更喜欢哪个？）
  Which of these books is yours?（这些书中哪本是你的？）

what 与 which 作形容词：
  What book are you reading?（你在读什么书？无范围）
  Which book are you reading?（你在读哪本书？有范围）

11.2.3 how 的扩展用法

how + 形容词/副词：
  how old（多大）/ how tall（多高）/ how big（多大）
  how fast（多快）/ how well（多好）/ how often（多频繁）

how 的常用短语：
  - How about...? / What about...?（...怎么样？）
    How about going for a walk?
  - How do you do?（初次见面）
  - How are you?（问候）
  - How come...?（怎么会...？）
    How come you're late?

11.3 疑问词引导的名词性从句

疑问词 + to do：
  I don't know what to do.
  Can you tell me how to get there?
  She hasn't decided whether to go or not.

疑问词引导的主语从句：
  What he said is true.
  Whether he will come is uncertain.

疑问词引导的宾语从句：
  I wonder who he is.
  Ask him where he lives.
  I don't know what happened.

注意：疑问词引导的名词性从句用陈述语序
  I don't know where he is.（不是 where is he）

12. 常见缩略形式

缩略形式（Contractions）在英语口语和非正式写作中非常常见。

12.1 缩略规则

基本规则：
- 省略一个或多个字母，用撇号 ' 代替
- 通常是助动词、be 动词、情态动词与主语或 not 的缩略
- 正式写作中避免使用缩略形式（除书信、对话外）

12.2 常见缩略形式表

12.2.1 主语 + be 动词

完整形式	缩略形式	示例
I am	I’m	I’m happy.
you are	you’re	You’re right.
he is	he’s	He’s a doctor.
she is	she’s	She’s beautiful.
it is	it’s	It’s raining.
we are	we’re	We’re students.
they are	they’re	They’re coming.
that is	that’s	That’s true.
there is	there’s	There’s a book.
here is	here’s	Here’s your pen.
who is	who’s	Who’s there?
what is	what’s	What’s your name?
where is	where’s	Where’s my bag?
how is	how’s	How’s it going?

12.2.2 主语 + 助动词 have

完整形式	缩略形式	示例
I have	I’ve	I’ve finished.
you have	you’ve	You’ve done well.
he has	he’s	He’s left.
she has	she’s	She’s gone.
it has	it’s	It’s been a long time.
we have	we’ve	We’ve met before.
they have	they’ve	They’ve arrived.
who has	who’s	Who’s been here?

12.2.3 主语 + 助动词 will / shall

完整形式	缩略形式	示例
I will/shall	I’ll	I’ll call you.
you will	you’ll	You’ll see.
he will	he’ll	He’ll come.
she will	she’ll	She’ll help you.
it will	it’ll	It’ll be fine.
we will/shall	we’ll	We’ll win.
they will	they’ll	They’ll be late.
that will	that’ll	That’ll do.
there will	there’ll	There’ll be trouble.
who will	who’ll	Who’ll go?
what will	what’ll	What’ll happen?
where will	where’ll	Where’ll you be?
how will	how’ll	How’ll you do it?

12.2.4 主语 + 情态动词 would

完整形式	缩略形式	示例
I would	I’d	I’d like some tea.
you would	you’d	You’d better go.
he would	he’d	He’d help if he could.
she would	she’d	She’d love to come.
it would	it’d	It’d be nice.
we would	we’d	We’d appreciate it.
they would	they’d	They’d rather stay.
that would	that’d	That’d be great.
there would	there’d	There’d be a problem.
who would	who’d	Who’d believe it?

12.2.5 主语 + 情态动词 had / should

完整形式	缩略形式	示例
I had/should	I’d	I’d better leave. / I’d seen it before.
you had/should	you’d	You’d better hurry.
he had/should	he’d	He’d better not go.
she had/should	she’d	She’d better try.
it had/should	it’d	It’d be better.
we had/should	we’d	We’d better start.
they had/should	they’d	They’d better wait.
who had/should	who’d	Who’d have thought?

12.2.6 否定缩略形式

完整形式	缩略形式	示例
is not	isn’t	He isn’t here.
are not	aren’t	They aren’t ready.
was not	wasn’t	I wasn’t there.
were not	weren’t	We weren’t invited.
do not	don’t	I don’t know.
does not	doesn’t	She doesn’t care.
did not	didn’t	I didn’t see him.
have not	haven’t	I haven’t eaten.
has not	hasn’t	He hasn’t called.
had not	hadn’t	I hadn’t noticed.
will not	won’t	I won’t go.
would not	wouldn’t	He wouldn’t listen.
shall not	shan’t	I shan’t forget.（英式）
should not	shouldn’t	You shouldn’t worry.
can not	can’t	I can’t swim.
could not	couldn’t	I couldn’t help it.
may not	mayn’t	（少用）
might not	mightn’t	（少用）
must not	mustn’t	You mustn’t tell.
need not	needn’t	You needn’t hurry.
dare not	daren’t	I daren’t ask.
ought not	oughtn’t	You oughtn’t to do that.
used not	usedn’t / didn’t use to	He usedn’t to smoke.
let us	let’s	Let’s go.
let us not	let’s not	Let’s not argue.

12.2.7 其他常见缩略

完整形式	缩略形式	示例
it is / it has	it’s	It’s cold. / It’s been years.
there is / there has	there’s	There’s a problem. / There’s been an accident.
who is / who has	who’s	Who’s coming? / Who’s finished?
what is / what has	what’s	What’s happening? / What’s happened?
where is / where has	where’s	Where’s my key? / Where’s he gone?
how is / how has	how’s	How’s your mother? / How’s he been?
that is / that has	that’s	That’s right. / That’s been fixed.
here is	here’s	Here’s your change.
I am going to	I’m gonna	I’m gonna leave.（口语）
want to	wanna	I wanna go.（口语）
going to	gonna	It’s gonna rain.（口语）
got to	gotta	I gotta go.（口语）
have got to	gotta	You gotta be kidding.（口语）
kind of	kinda	It’s kinda difficult.（口语）
sort of	sorta	I sorta understand.（口语）
out of	outta	Get outta here!（口语）
because	’cause / cuz	I did it ’cause I had to.（口语）
them	’em	Give ’em to me.（口语）
of	o’	a cup o’ tea（口语/方言）
old	ol’	the ol’ days（口语）
madam	ma’am	Yes, ma’am.

12.3 缩略形式使用注意事项

1. 正式场合避免使用：
   - 学术论文、正式报告、商务信函中避免使用缩略形式
   - 口语、非正式邮件、个人信件中可以使用

2. 句末避免使用：
   - 一般不在句末使用缩略形式（特别是否定形式）
   - 不说：Yes, I am. → 说：Yes, I'm...（但句末时通常说 Yes, I am.）

3. 双重否定：
   - 缩略形式的否定不算双重否定
   - I don't know nothing.（错误，应为 I don't know anything.）
   - 这不是缩略形式的问题，而是否定词使用的问题

4. 所有格与缩略的区别：
   - it's = it is / it has（缩略）
   - its = 它的（所有格）
   - you're = you are（缩略）
   - your = 你的（所有格）
   - they're = they are（缩略）
   - their = 他们的（所有格）
   - who's = who is / who has（缩略）
   - whose = 谁的（所有格）

结语

英语语法是一个系统而庞大的知识体系，本文涵盖了从基础到进阶的12个核心模块。掌握这些语法规则，将为你的英语听说读写能力打下坚实基础。

学习建议：

循序渐进：从词性、句子成分等基础概念入手，逐步过渡到时态、从句等复杂内容
大量阅读：在阅读中观察语法规则的实际应用，培养语感
勤于练习：通过造句、改错、翻译等练习巩固所学知识
对比学习：将易混淆的语法点（如时态、语态、从句类型）进行对比记忆
参考工具：善用语法词典、在线资源和语法检查工具

语法不是束缚，而是工具。 熟练运用语法规则，你的英语表达将更加准确、流畅、地道。祝学习进步！

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