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初一英语语法大全知识点

网友发布 2023-06-19 10:36 · 头闻号教育培训

初一英语语法虽然是从简单的一些日常用语出发的,但语法中常会有一些知识点看起来很细小,容易被忽视,但这些知识点掌握不熟练,往往会造成一些语法应用上的错误。因此在学习初一英语语法时,要认真、细心,不要觉得一些地方不重要而得过且过。

下面从几个方面,总结出了初一英语语法,如果要复习英语句法的同学,可以参考一下,

一、初一英语语法——词法

1、名词

A)、名词的数

我们知道名词可以分为可数名词和不可数名词,而不可数名词它没有复数形式,但可数名词却有单数和复数之分,复数的构成如下:

一)在后面加s。如:fathers, books, Americans, Germans, apples, bananas

二)x, sh, ch, s, tch后加es。如:boxes, glasses, dresses, watches, wishes, faxes

三)1)以辅音字母加y结尾的变y为i再加es 如:baby-babies, family-families, duty-duties, comedy-comedies, documentary-documentaries, story-stories

2)以元音字母加y结尾的直接加s。如:day-days, boy-boys, toy-toys, key-keys, ways

四)以o结尾加s(外来词)。如:radios, photos, 但如是辅音加o的加es:如: tomatoes西红柿, potatoes马铃薯

五)以f或fe结尾的变f为v再加es(s)。如:knife-knives, wife-wives, half-halves, shelf-shelves, leaf-leaves, yourself-yourselves

六)单复数相同(不变的)有:fish, sheep, deer鹿子, Chinese, Japanese

七)一般只有复数,没有单数的有:people,pants, shorts, shoes, glasses, gloves, clothes, socks

八)单词形式不变,既可以是单数也可以是复数的有:police警察局,警察, class班,同学, family家,家庭成员

九)合成的复数一般只加主要名词,多数为后一个单词。如:action movie-action movies, pen pal-pen pals; 但如果是由man或woman所组成的合成词的复数则同时为复数。如:man doctor-men doctors, woman teacher-women teachers

十)有的单复数意思不同。如:fish鱼 fishes鱼的种类, paper纸 papers报纸,卷子,论文, work工作 works作品,工厂, glass玻璃 glasses玻璃杯,眼镜, orange桔子水 oranges橙子, light光线 lights灯, people人 peoples民族, time时间 times时代, 次数, chicken 鸡肉 chickens 小鸡

十一) 单个字母的复数可以有两种形式直接加s或’s。如:Is (I’s), Ks (K’s)。但如是缩略词则只加s。如:IDs, VCDs, SARs

十二) 特殊形式的有:child-children, man-men, woman-women, foot-feet, mouse-mice, policeman-policemen, Englishman-Englishmen

B)名词的格

当我们要表示某人的什么东西或人时,我们就要使用所有格形式。构成如下:

一)单数在后面加’s。如:brother’s, Mike’s, teacher’s

二)复数以s结尾的直接在s后加’,如果不是以s结尾的与单数一样处理。如:Teachers’ Day教师节, classmates’; Children’s Day六一节, Women’s Day三八节

三)由and并列的名词所有时,如果是共同所有同一人或物时,只加最后一个’s,但分别拥有时却分别按单数形式处理。如:Mike and Ben’s room迈克和本的房间(共住一间),Mike’s and Ben’s rooms迈克和本的房间(各自的房间)

2、代词

项目 人称代词 物主代词 指示代词 反身代词

人称 主格 宾格 形容词 名词性

第一人称 单数 I me my mine myself

复数 we us our ours ourselves

第二人称 单数 you you your yours yourself

复数 you you your yours yourselves

第三人称 单数 she her her hers herself

he him his his himself

it it its its this that itself

复数 they them their theirs these those themselves

3、动词

A) 第三人称单数

当动词是第三人称单数时,动词应该像名词的单数变动词那样加s,如下:

一)一般在词后加s。如:comes, spells, waits, talks, sees, dances, trains

二)在x, sh, ch, s, tch后加es。如:watches, washes, wishes, finishes

三)1)以辅音字母加y结尾的变y为i再加es。如:study-studies, hurry-hurries, try-tries

2)以元音字母加y结尾的直接加s。如:plays, says, stays, enjoys, buys

四)以o结尾加es。如:does, goes

五)特殊的有:are-is, have-has

B) 现在分词

当我们说某人正在做什么事时,动词要使用分词形式,不能用原形,构成如下:

一)一般在后加ing。如:spell-spelling, sing-singing, see-seeing, train-training, play-playing, hurry-hurrying, watch-watching, go-going, do-doing

二)以不发音e的结尾的去掉e再加ing。如:dance-dancing, wake-waking, take-taking, practice-practicing, write-writing, have-having

三)以重读闭音节结尾且一个元音字母+一个辅音字母(注意除开字母组合如show –showing, draw-drawing)要双写最后的辅音字母再加ing。如:put-putting, run-running, get-getting, let-letting, begin-beginning

四)以ie结尾的变ie为y再加ing。如:tie-tying系 die-dying死 lie-lying 位于

4、形容词的级

我们在对两个或以上的人或物进行对比时,则要使用比较或最高级形式。构成如下:

一) 一般在词后加er或est(如果是以e结尾则直接加r或st)。如:greater-greatest, shorter –shortest, taller –tallest, longer –longest, nicer- nicest, larger -largest

二)以重读闭音节结尾且1个元音字母+1个辅音字母(字母组合除外,如few-fewer fewest)结尾的双写结尾的辅音再加er /est。如:big-bigger biggest, red-redder reddest, hot-hotter hottest

三) 以辅音字母+y结尾的变y为i加er/est。如:happy-happier happiest, sorry-sorrier sorriest, friendly-friendlier friendliest(more friendly most friendly), busy-busier busiest, easy-easier easiest

四)特殊情况:(两好多坏,一少老远)

good/well - better best many/much - more most bad/ill – worse worst

little- less least old- older/elder oldest/eldest far- farther/further farthest/furthest

5、数词 (基变序,有规则;一、二、三,自己背;五、八、九、十二;其它后接th;y结尾,变为i, eth跟上去。) first, second, third; fifth, eighth, ninth, twelfth; seventh, tenth, thirteenth, hundredth; twenty-twentieth, forty-fortieth, ninety-ninetieth

二、初一英语语法——句式

1.陈述句

肯定陈述句 a) This is a book. (be动词)

b) He looks very young. (连系动词)

c) I want a sweat like this. (实义动词)

d) I can bring some things to school. (情态动词)

e) There’s a computer on my desk. (There be结构)

否定陈述句 a) These aren’t their books. b) They don’t look nice.

c) Kate doesn’t go to No. 4 Middle School. d) Kate can’t find her doll.

e) There isn’t a cat here. (=There’s no cat here.)

2. 祈使句

肯定祈使句 a) Please go and ask the man. b) Let’s learn English!

c) Come in, please.

否定祈使句a) Don’t be late. b) Don’t hurry.

3. 疑问句

1) 一般疑问句 a) Is Jim a student? b) Can I help you? c) Does she like salad?

d) Do they watch TV? e) Is she reading?

肯定回答: a) Yes, he is. b) Yes, you can. c) Yes, she does. d) Yes, they do. e) Yes, she is.

否定回答: a) No, he isn’t. b) No, you can’t. c) No, she doesn’t. d) No, they don’t. e) No, she isn’t.

2) 选择疑问句 Is the table big or small? 回答 It’s big./ It’s small.

3) 特殊疑问句

① 问年龄 How old is Lucy? She is twelve.

② 问种类 What kind of movies do you like? I like action movies and comedies.

③ 问身体状况 How is your uncle? He is well/fine.

④ 问方式 How do/can you spell it? L-double O-K.

How do we contact you? My e-mail address is cindyjones@163.com.

⑤ 问原因 Why do you want to join the club?

⑥ 问时间 What’s the time? (=What time is it?) It’s a quarter to ten a.m..

What time do you usually get up, Rick? At five o’clock.

When do you want to go? Let’s go at 7:00.

⑦ 问地方 Where’s my backpack? It’s under the table.

⑧ 问颜色 What color are they? They are light blue.

What’s your favourite color? It’s black.

⑨ 问人物 Who’s that? It’s my sister.

Who is the boy in blue? My brother.

Who isn’t at school? Peter and Emma.

Who are Lisa and Tim talking to?

⑩ 问东西 What’s this/that (in English)? It’s a pencil case.

What else can you see in the picture? I can see some broccoli, strawberries and hamburgers.

11问姓名 What’s your aunt’s name? Her name is Helen./She’s Helen.

What’s your first name? My first name’s Ben.

What’s your family name? My family name’s Smith.

12 问哪一个 Which do you like? I like one in the box.

13 问字母 What letter is it? It’s big D/small f.

14 问价格 How much are these pants? They’re 15 dollars.

15 问电话号码 What’s your phone number? It’s 576-8349.

16 问谓语(动作) What’s he doing? He’s watching TV.

17 问职业(身份) What do you do? I’m a teacher.

What’s your father? He’s a doctor.

三、初一英语语法——时态

1、一般现在时 表示普遍、经常性的或长期性的动作时使用一般现在时,它有:

Be 动词:She’s a worker. Is she a worker? She isn’t a worker.

情态动词:I can play the piano. Can you play the piano? I can’t play the piano.

行为动词:They want to eat some tomatoes. Do they want to eat any tomatoes? They don’t want to eat any tomatoes.

Gina has a nice watch. Does Gina have a nice watch? Gina doesn’t have a watch.

2、现在进行时 表示动词在此时正在发生或进行就使用进行时态,结构为sb be v-ing sth + 其它.

I’m playing baseball. Are you playing baseball? I’m not playing baseball.

Nancy is writing a letter. Is Nancy writing a letter? Nancy isn’t writing a letter.

They’re listening to the pop music. Are they listening the pop music? They aren’t listening to the pop music.

七年级英语语法归纳

[第一类] 名词类

1. 这些女老师们在干什么?

[误] What are the woman teachers doing?

[正] What are the women teachers doing?

[析] 在英语中,当一名词作定语修饰另一名词(单或复数形式)时,作定语的名词一般要用其单数形式;但当man,woman作定语修饰可数名词复数形式时,要用其复数形式men,women.

2. 房间里有多少人?

[误] How many peoples are there in the room?

[正] How many people are there in the room?

[析] people作“人、人们”解时,是个集合名词,其单复数同形。

3. 我想为我儿子买两瓶牛奶。

[误] I want to buy two bottle of milk for my son.

[正] I want to buy two bottles of milk for my son.

[析] 表示不可数名词的数量时,常用“a / an或数词 +表量的可数名词 + of + 不可数名词”这一结构, 其中当数词大于1时,表量的可数名词要用其复数形式。

[第二类] 动词类

4. 你妹妹通常什么时候去上学?

[误] What time does your sister usually goes to school?

[正] What time does your sister usually go to school?

[析] 借助助动词do(或does)构成疑问句或否定句时,句中的谓语动词用其原形。

5. 琳达晚上经常做作业,但今晚她在看电视。

[误] Linda often do her homework in the evening,but this evening she watching TV.

[正] Linda often does her homework in the evening,but this evening she is watching TV.

[析] 在初一英语学习阶段,我们接触到了两种主要时态:一般现在时和现在进行时。一般现在时表示经常的或习惯性的动作,常和often,usually,sometimes 等时间状语连用。在一般现在时的句子中,若主语是第三人称单数,谓语动词要用其第三人称单数形式。现在进行时表示现阶段正在进行或发生的动作,现在进行时由be(am / is / are) + ving形式构成。

6 这双鞋是红色的。

[误] This pair of shoes are red.

[正] This pair of shoes is red.

[析] 在shoes,trousers,gloves,glasses等表示成双成对的衣物或工具名词前用pair(表计量)修饰时,谓语动词的形式由pair的单复数形式来决定。

[第三类] 代词类

7. 这张票是她的,不是我的。

[误] This is hers ticket. It’s not my.

[正] This is her ticket. It’s not mine.

[析] 物主代词有形容词性物主代词和名词性物主代词之分。形容词性物主代词之后一定要接名词,而名词性物主代词之后不需接任何词。

8. 吴老师教我们英语。

[误] Miss Wu teaches our English.

[正] Miss Wu teaches us English.

[析] teach sb. sth.中的sb.作teach的宾语,因此当sb.为人称代词时要用其宾格形式。

[第四类] 介词类

9. 你能找到这个问题的答案吗?

[误] Can you find the answer of this question?

[正] Can you find the answer to this question?

[析] 英语中用“the answer to …”表示“……的答案”。类似结构还有the key to the door,the way to the zoo等。

10. 格林先生星期六上午来这里。

[误] Mr Green will come here in Sunday evening.

[正] Mr Green will come here on Sunday evening.

[析] 表示在上午、下午等时,介词要用in;而表示在具体的某天上午、下午时,介词要用on.

11. 那个穿着红裙子的小女孩是我们老师的女儿。

[误] That little girl on a red skirt is our teacher’s daughter.

[正] That little girl in a red skirt is our teacher’s daughter.

[析] 用介词表示“穿戴衣物”时,只能用in,其他介词没有此用法。

[第五类] 副词类

12. 莉莉,你为什么不回家呢?

[误] Lily,why don’t you go to home?

[正] Lily,why don’t you go home?

[析] come,go 等后接here,there,home等地点副词时,地点副词前不加to。

[第六类] 连词类

13. 我喜欢语文和英语,但我不喜欢体育和历史。

[误] I like Chinese and English,but I don’t like P.E.and history.

[正] I like Chinese and English,but I don’t like P.E.or history.

[析] 在肯定句中并列成分之间用and来连接;而在否定句中,并列成分之间的连接需用or。

[第七类] 冠词类

14. 乘飞机去北京花了史密斯一家人一个小时。

[误] It takes Smiths a hour to go to Beijing by a plane.

[正] It takes the Smiths an hour to go to Beijing by plane.

[析] 1.表示“……一家人”用结构“the + 姓氏复数”;

2.our 一词的第一个字母不发音,它是以元音音素开头的,所以“一小时”要用 an hour;

3.用介词by表示“乘坐”某种交通工具时,交通工具名词前不加任何冠词。

[第八类] 句法类

15. ――你不是学生吗? ――不,我是学生。

[误] ――Aren’t you a student? ――No, I am.

[正] ――Aren’t you a student? ――Yes, I am.

[析] 对否定疑问句的回答是用Yes还是用No,这取决于实际情况:如果事实是肯定的,就用Yes表“不”;如果事实是否定的,就用No表“是的”。

从英语的句子结构上说,除了修饰名词的定语和修饰动词的状语外,在千变万化的句子中可归纳为五个基本句式,一般地说,某些动词用在某一句式中,下面笔者把这些句型和常用的动词进行归类,供你参考。

1.S(主) + Vi(不及物动词)(谓)

Time flies.

1) S + V + adverbial(状语)

Birds sing beautifully.

2) S + Vi+ prep Phrase(介词短语)

He went on holiday.

3) S + Vi+ Infinitive (不定式)

We stopped to have a rest.

4) S + Vi+ Participle (分词)

I'll go swimming.

2. S (主)+ Vt (及物动词)(谓)+ O(宾)

We like English.

1) S + VT + N/Pron

I like music.

I like her.

2) S + VT + infinitive(不定式)

I want to help him.

常用于这句型的动词有:attempt, dare, decide, desire, expect, hope, intend, learn, need, offer, pretend, promise, propose, purpose, refuse, want, wish等。

3) S + VT + Wh-Word + Infinitive

I don't know what to do.

常用于这句型的动词有:ask, consider, decide, discover, explain, find out, forget, guess, inquire, know, learn, observe, remember, see, settle, tell, think, understand, wonder等。

4) S + VT + Gerund

I enjoy living here.

常用于这句型的动词有:admit, advise, avoid, consider, defend, enjoy, excuse, finish, forbid, mind, miss, practise, risk, suggest, give up, can't help等。

5) S + VT + That-clause

I don't think (that) he is right.

常用于这句型的动词有:Admit, believe, command, confess, declare, demand, deny, doubt, expect, explain, feel(觉得), hear(听说), hope, imagine, intend, know, mean, mind(当心), notice, propose, request, report, say, see(看出),show, suggest, suppose, think, understand, wish, wonder(觉得奇怪)。

3. S (主)+ V(谓)(lv)( 系动词)+ P(表)

We are Chinese.

除了be 系动词外,还有一些动词也可以用作系动词,1)表感官的动词,feel, smell, taste, sound, look, appear, seem 等。2) 表转变变化的动词,become, get, grow, turn, go,等。 3)表延续的动词 remain, keep, seem, hold, stay, rest等。4)表瞬时的动词 come, fall, set, cut, occur等 5)其他动词 eat, lie, prove, ring, run, shine, sit, stand, continue, hang等。

1) S + Lv + N/Pron(名词/代词)

He is a boy.

This is mine.

2) S + Lv + Adj(形容词)

She is beautiful.

3) S + Lv + Adv (副词)

Class is over.

4) S + Lv + Prep Phrase

He is in good health.

5) S + Lv + Participle(分词)

He is excited.

The film is interesting.

4. S (主)+ VT (谓)+ In O(间接 宾) + D O(直接 宾)

I give you help.

1) S + VT + N/Pron + N

I sent him a book.

I bought May a book.

2) S + VT + N/Pron + To/for-phrase

He sent a book to me.

He bought a coat for me.

间接宾语前需要加to 的常用动词有:allow, bring, deny, do(带来), give, grant, hand, leave, lend, offer, owe, pass, pay, permit, promise, read, refuse, render, restore, sell, send, show, teach, tell wish, write等。

间接宾语前需要加for 的常用动词有:bring, buy, cash, choose, fetch, get, leave, make, order, paint, play(演奏),save, sing, spare等。

5. S (主)+ VT(谓)+ O(宾) + O C(宾补)

I make you clear.

1) S + VT + N/Pron + N

We named our baby Tom.

常用于这句型的动词有:appoint, call, choose, elect, entitle, find, make, name, nominate(命名)。

2) S + VT + N/Pron + Adj

He painted the wall white.

常用于这句型的动词有:beat, boil, cut, drive, find, get, hold, keep, leave, like, make, paint, see, set, turn, want, wash, wipe, wish等。

3) S + VT + N/Pron + Prep Phrase

She always keeps everything in good order.

4) S + VT + N/Pron + Infinitive

I wish you to stay.

I made him work

常用于这句型的动词有:a)不定式带to的词:advice, allow, ask, beg, cause, choose, command, decide, encourage, expect, force, get, hate, invite, know, leave, like, love, order, permit, persuade, prefer, remain, request, teach, tell, want, warn, wish等。b)不定式不带to的词:feel, have, hear, know, let, listen to, look at, make, notice, see, watch等。

5) S + VT + N/Pron + Participle (分词)

I heard my name called.

I feel something moving.

常用于这句型的动词有:catch, feel, find, get, have, hear, imagine, keep, leave, listen to, look at, notice, observe, perceive, see, set, smell, start, watch等。

6) S + VT + N/Pron + Wh-word + Infinitive

He show me how to do it.

常用于这句型的动词有:advise, ask, inform, show, teach, tell等。

7) S + VT + N/Pron + That-clause

He told me that the film was great.

常用于这句型的动词有:assure, inform, promise, remind, teach, tell, warm等。

8) S + VT + N/Pron + Wh-Clause

He asked me what he should do.

常用于这句型的动词有:Advise, ask, inform, show, teach, tell.

 1、目前所学的动词的形式有4 种:

 ①动词原形;如:do;have;like

 

②动词的单三式(常在动词原形后加s);如:get-gets

 

③动词不定式(to+动词原形);如:meet-to meet

 

④动词ing式(动词原形后加ing)如:look-looking

 2、表示征求意见或建议邀请的礼貌用语

 Would you like +to+动词原形? (你想要……吗?)

 

How about+动词ing ?(……怎么样?……好不好?)

 

What about +动词ing? (……怎么样?……好不好?)

 

Why not +动词原形? (为什么不……呢?)

 

Why don’t you +动词原形 ?(你为什么不……呢?)

 

Let’s +动词原形.(让我们……吧。)

 

表示同意、答应:

 

①Yes,I’d like to./Oh,I’d love to.

 

②All right/OK.

 

③Great!④Sure.

 

⑤Good idea!

 

⑥Thanks.I’ll be glad to

 

⑦Thanks.That would be very nice.

 

⑧I’d like that.

 

表示不同意、拒绝:

 

①No,thanks.

 

②Sorry,I can’t.

 

③I’d like to.But I’m afraid I can’t/I have no time.

 3、目前学过的情态动词有can, may,could,would和will等五个。

 学好情态动词必须把握三个用法:

 

①后必须跟动词原形 ;

 

②没有三单式(其后不能加s);

 

③可以把情态动词提到句首构成疑问句;

 

可以在情态动词后面加上not构成否定句。

 4、目前学过的后跟动词不定式(to+动词原形)的有:

 ①would like to+动词原形(想要做某事);

 

want to+动词原形(想要做某事);

 

②forget to+动词原形(忘记要做某事);

 

③like to +动词原形(喜欢做某事);

 

love to +动词原形(喜欢做某事)

 

④ask sb. to +动词原形.(请/叫某人做某事)

 

tell sb. to +动词原形.(告诉/叫某人做某事)

 

would like sb. to +动词原形.(想叫某人做某事)

 

want sb. to +动词原形.(想叫某人做某事)

 

⑤have to +动词原形(必须/不得不做某事)

 

⑥Nice/Glad/happy to +动词原形(很高兴做某事)

 

如:Nice to meet you.

 

I’m glad to be here.

 5、目前学过的后跟动词原形的有:

 ①情态动词:can,may,could,would,will后;

 

②助动词do,don’t,does,doesn’t后(does,doesn’t一出现,三单式要滚蛋);

 

③动词please(请)后:如:Please tell him about the picnic.

 

④短语Why not…/Why don’t you…后;

 

⑤动词let 后;如:Let Jane help you. Let’s go home.

 

⑥动词help后,也可带to;如:Let’s help Maria (to) carry water.

 

⑦祈使句以动词原形开头,如:Have a seat , please.请坐下。

 6、目前学过的后跟动词ing的有:

 ①Be动词后的动词;

 

如:Are you kidding? I’m just looking. This is Michael speaking.

 

②所有的介词后;已学过的介词有:at,for,about,in,on,from,of,to,with,after等。

 

如:What about +动词ing? —Whatabout flying a kite with me ?

 

How about +动词ing? —How about going fishing this Sunday?

 

It’s time for going home=It’s time to go home.

 

Thank you for helping me=Thank you for your help..

 

③go +动词ing——go fishing去钓鱼; go shopping去购物

 

④do some shopping购物

 

⑤like/love +动词ing (喜欢做某事)

 7、有单复数变化的词

 ①名词

 

(1) 名词单数变复数的方法

 

1)大部分在词尾加s.如:dog---dogs

 

2)以-s, -x, -ch, -sh 结尾的加es. 如:

 

class---classes bus---buses glass---glasses

 

box---boxes watch---watches(手表) fish---fishes

 

3)以“辅音字母+ y”结尾的,变y为i,加es.

 

baby---babies(婴儿) family---families(家庭)

 

study---studies(书房) fly---flies(蝇子)

 

注意:boy ---boys play---plays toy---toys way---ways monkey---monkeys

 

4)以 f, fe结尾的,变f, fe为v,加es.

 

half---halves(一半) knife---knives(小刀)

 

yourself(你自己)---yourselves(你们自己)

 

(2) 特殊变化的词

 

1) a 变e: man—men(男子) woman—women(女子)

 

snowman---snowmen(雪人)

 

Englishman--- Englishmen(英国人)

 

Englishwoman---Englishwomen(英国妇女)

 

2) o变e:foot---feet(脚) tooth---teeth(牙齿)

 

3) 单复数同形:Chinese---Chinese(中国人)

 

fish---fish(鱼) yuan---yuan(人民币元)

 

4) mouse—mice (老鼠) child—children(儿童)

 

5)合成词中一般变后面的词:apple tree---apple trees(苹果树)

 

但下列需前后都变:

 

man teacher---men teachers(男教师)

 

woman doctor---women doctors(女医生)

 

6)集体名词,以单数形式出现,但实为复数。例如:people(人们) police(警察们)本身就是复数,family指“全家人”时,本身也是复数,它们都不能加s. 如:The Chinese people are very kind.中国人民都 很友好。

 

Kangkang’s family are all tall and thin.康康全家人都又高又瘦。

 

②be动词: 单数am, is; 复数are

 

③行为动词:复数:动词原形

 

单数:在行为动词后加s或es(即动词的三单式)。 如:

 

Maria likes milk.(likes是三单式,为单数)

 

Maria and Jane like milk.(like是动词原形,为复数)

 

④指示代词 单数:this这个 that那个

 

复数:these这些 those那些

 8.名词+’s所有格

 单数名词后直接加 “ ’s ”:

 

Jim’s coat 吉姆的外套 Jeff’s mother杰夫的妈妈

 

以s结尾的复数名词,只加“’”

 

Teachers’ Day教师节 the twins’ books双胞胎的书

 

不以s结尾的不规则的名词复数,加“ ’s ”

 

Children’s Day 儿童节 men’s shoes男式鞋

 

表示两者共同拥有时,只在最后一个名词后加’s

 

Lucy and Lily’s mother 露茜和莉莉的妈妈(共同的妈妈,一个妈妈)

 

表示两者各自拥有时,要在每个名词后加’s

 

Lucy’s and Kate’s rooms 露茜和凯特的房间(各自的房间,两间房子)

 9. 三单问题

 ①总则:主语是第三人称单数时,动词(谓语)要用三单式。如:

 

He gets up at six。 由于主语He是第三人称单数,动词get后要s,即gets是三单式。

 

②可以作第三人称单数主语(三单主语)的有:(1)he, she,it;(2)单个的人;单个的物。

 

③动词三单式的构成

 

(1)特殊的:be—is have—has

 

(2)有规律的:

 

1)大部分在词尾加s; 如: get—gets take--takes need-needs know—knows

 

2)以s, x,ch, sh,o 结尾的加es; 如:

 

guess—guesses(猜) watch--watches(看) teach―teaches(教) fish-fishes(钓鱼) go-goes(去) do-does

 

3)以“辅音字母+y”结尾的,变y为i,加es. 如:

 

study→studies(学习) fly→flies(飞,放)

 

carry→carries(提) worry—worries(担心)

 

注意:buy-buys say-says play-plays

 10. 冠词的用法

 <1>a /an 不定冠词,表示“一个…”,放在单数名词前,指不确定的某一个;

 

<2> a 用在元音前(不是元音字母);an 用在辅音前(不是辅音字母)。如:(1) an English boy,an apple,an orange, an egg , an eraser, an old monkey,

 

(2) an hour一个小时 half an hour 半小时 (hour中h不发音)

 

(3) a “ d”(一个d), an “i”, an “f”, an “x”, a “u”.

 

<3>the 定冠词,表示“ 这,那,这些,那些”,放在名词前,表示特指。

 11. 数 词

 (一)、基数词

 

注意 eleven, twelve , thirteen, fourteen, eighteen, twenty, thirty, forty, fifty, one hundred/thousand等词的拼写。具体用法如:

 

Lesson Twelve, Class Two, Grade Eight, The No. 45 bus, Channel Five, Room 302, the No.2 middle School, a five-year-old daughter

 

注意

 

1、“前有,后无;前无,后有”即 two hundred books , hundreds of books

 

2、如 eight-year-old 的词后面要加名词

 

3、“在某人几十岁时”用 in one’s +整十的复数 如:in her fifties, in their thirties

 

4、表示“ 多高、多宽、多长、多深,年龄少大、距离多远”时,用“数量+单位+形容词”

 

如:two months old, twenty meters deep

 

(二)、序数词

 

注意 first, second, third, fifth, eighth, ninth, twelfth, twentieth, twenty-first, ninety-ninth, one hundredth等词的拼写。 具体用法如:the Twelfth lesson, June 5th, the Second World War, on his twentieth birthday.

 

(三)、分数, 小数和百分比:

 

分数的表达:分子用基数词,分母用序数词;分子大于一,分母加 s,分子和分母之间一般用连字号。 如3/5读作three-fifths, 1/3读作one-third

 

0.78读作zero point seven eight 7.45读作 seven point four five

 

45%读作 Forty-five percent 67%读作sixty-seven percent

 

注意:分数表示1/2, 可以用a/one half 表示;分数1/4,3/4也可以用quarter表示。如:

 

1/4读作one-fourth or a quarter, 3/4读作three-fourths or three quarters

 

Half of the students live in the school on weekdays. (习惯上省略a)

 

One- third of the students are on the playground.

 

Three?-fourths of the earth is covered with water.

 

(四)、时间和钟点

 

7:15读作seven fifteen/ a quarter past seven

 

7:30读作seven thirty/half past seven

 

7:35读作seven thirty-five/ twenty-five(minutes)to eight

 

8:03读作 three minutes past eight

 

注意:如果分钟不是5的倍数,minute不能省略。

 

(五)、日期和年份

 

on March 8读作 on march the eighth on 8th of March读作 on the eighth of March

 

in 1998读作 nineteen ninety-five, in 2008读作 in two thousand and eight

 12. 介词

 一、介词一般位于名词或代词之前,在句中不单独做任何成分。介词本身有独立的含义,但意义不够完整,在句中使用时,后面必须接有宾语构成介词短语后,才能表达完整的意义。介词短语在句中常作状语、定语、表语或宾语补足语。

 

二、介词的用法:

 

(一)表示时间的介词的用法: 1。at, on, in

 

(1)at 在句中用在钟点之前。意为“在?点钟”如:at six在6点

 

(2)at用在固定短语中。如: at noon在中午;at this time of year 一年这个时候

 

(3)on常用于表示具体的哪一天或某天的上午、下午及晚上或用于固定短语中。

 

如:on the morning of June 在6月5日的早上; on a cold winter night在一个寒冷的冬天的夜里;on May 20th 在5月20日

 

(4)on用在星期前。如: on Sunday在星期日

 

(5)in用于年、月前面,季节、世纪前以及固定短语中。

 

如: in 2008 在2008年; in October在10月; in spring 在春天; in the twentieth century 在二十世纪; in his twenties 在他二十多岁时; in the morning / afternoon / evening在早上/下午/晚上

 

2.before ,after,in

 

① in是以现在为起点,表示将来一段时间以后,常用于一般将来时态中。 eg: I will come back in three days.我三天以后回来。

 

②after是以过去为起点,表示过去一段时间以后,常用于过去时态中。 eg:She went after three days. 她三天以后走的。

 

③before 表示“某时刻或某时间之前”时态根据句子而定。 E.g: Check your papers carefully before you hand them in,

 

(二)表示地点方位介词的用法:

 

1.at, in at 后跟小地方,in后跟大地点

 

2.in, on, to

 

in表示在某一范围内的某方位。

 

on表示与某地相邻关系。

 

to表示在某一地区之外的某方位,不属于该范围。

 

Shanghai lies in the east of China.

 

Shandong lies on the east of Hebei.

 

China lies to the west of Japan.

 

(三)表示手段方式的介词的用法: in, by, with, on表示“用”

 

(1)by主要指利用交通工具。即:“by +名词原形”或“行为手段by +v-ing形式”。如:I go to school by bike every day. He learns English by listening to cassettes.

 

(2)in主要指 "用某种语言"或"用工具、材料"以及方式( way)等。

 

如: ?People say it in English. ? I often write in ink / pencil. ? He can say it in a different way.

 

(3)on主要表示行走或站立时所用的身体部位,或利用交通工具。

 

即:“on +冠词 / 形容词性物主代词 + 交通工具名词”或接表示媒体的名词。

 

此时相当于over。如:? People walk on foot. But some people can walk on hand. ? He often goes to school on a bus.

 

注意:“on / in +冠词 / 形容词性物主代词 + 交通工具名词”这种交通方式的表达可以转换成“ by +交通工具名称”。例:on a bike = by bike 如果交通工具名词为car,习惯上用in ,其他多用on。如: He learns English on TV.

 

(4)with主要指某一具体的劳动工具、材料或用身体部位。

 

如: ?They like writing with a brush.他们愿意用毛笔写字. ? We see with our eyes and hear with our ears.我们用眼睛看,用耳朵听.

 13. 祈使句

 一、用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句,祈使句最常用于表达命令,因此在学校文法中也常称为命令句。

 

祈使句因对象(即主语)是第二人称,所以通常都省略。祈使句的动词都为一般现在时,句末则使用句号来表示结束。

 

用客气的语气表示祈使句时,可在句首或句尾加上please,但如果在句尾加please,那在please之前一定要加一个逗号“,”。

 

二、表现形式

 

●肯定结构:

 

1. Do型(即:动词原形(+宾语)+其它成分)。如:Please have a seat here. 请这边坐。

 

有的祈使句在意思明确的情况下,动词可省略。如:This way, please. = Go this way, please. 请这边走。

 

2. Be型(即:Be + 表语(名词或形容词)+其它成分)。如:Be a good boy! 要做一个好孩子!

 

Be quite.安静 Be careful!小心!

 

3. Let型(即:Let + 宾语 + 动词原形 + 其它成分)。如:Let me help you. 让我来帮你。

 

●否定结构:

 

1. Do型和Be型的否定式都是在句首加don't构成。如:Don't forget me! 不要忘记我! Don't be late for school! 上学不要迟到!

 

2. Let型的否定式有两种:“Don't + let + 宾语 + 动词原形 + 其它成分”和“Let + 宾语 + not + 动词原形 + 其它成分”。如:Don't let him go. / Let him not go. 别让他走。

 

3. 有些可用no开头,用来表示禁止性的祈使句。如:No smoking! 禁止吸烟!No fishing! 禁止钓鱼!

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