初中一年级英语语法_初中英语语法系列

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名师辅导：初中一年级英语语法

一、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, glaes, drees, 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, glaes, 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, cla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, gla玻璃 glaes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, clamates’;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

2、代词

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/wellmore most bad/ill – worse worst

little-le least old-older/elder oldest/eldest far-farther/further farthest/furthest5、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、句式

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： 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 addre 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.问哪一个 Which do you like? I like one in the box.问字母 What letter is it? It’s big D/small f.问价格 How much are these pants? They’re 15 dollars.问电话号码 What’s your phone number? It’s 576-8349.问谓语(动作)What’s he doing? He’s watching TV.问职业(身份)What do you do? I’m a teacher.What’s your father? He’s a doctor.三、时态

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.