动词第三人称单数的变化规则及练习

动词第三人称单数的变化规则及练习

一、使用情况：

在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式，即常在动词原形后加-s或-es。(标志词usually often always sometimes never every等)

二、变化规则

1、直接在动词后+s

例如：like- likes play-plays

2、以s, x, sh, ch, 接尾的动词：+es

例如：wash-washes

3、以辅音+o接尾的动词：+es

例如：go-goes

4、以辅音字母+y接尾的动词：变y为i+es

例如：fly-flies

以元音字母+y接尾的动词后+s

例如：play-plays

5、除上述规律外，还应注意下面三点：

1)动词have ，遇到主语是第三人称单数时，要用has；动词be 的第三人称

单数形式是is。

2）含有动词第三人称单数形式的句子变否定句时，要用doesn't + 动词原形，如：He goes to school at six in the morning. (变否定句)→He doesn't go to school at six in the morning.

3)对含有动词第三人称单数形式的句子提问时，要用助动词does

如：She goes home at five every day. (对划线部分提问)→When / What time does she go

注意：不规则变化：have-----has，be-------is，do-----does

I 写出下列动词的第三人称单数(-s)和现在分词(-ing) go

do

play

jump

swim

run

put

sing

dance

come

get

have

fly

study

read

write

look

drink

eat

walk

like

II选择

1.Ben_____a new book.

A. have

B. has

C. haves

D. were

2.Ben and Mary some books.

A. have

B. has

C. are

D. were

3.I some stories every day.

A. have

B. has

C. are

D. were

4.I __________ ice cream.

A.like

B.likes

C.liking

D.likees

5. Kitty__ English every day

A.read

B.reades

C.reading

D.reads

6.A man _____in front of his car.

A.walk

B.walks

C.walking

D.work

7.Sam’s bicycle ______a bell.

A.have B has C.having D.is having

8.I every day

A.swim

B.swims

C.swiming

D.swimes

9.He his homework every day.

A.does

B.do

C.are

D.is

10. I ________ my homework every day.

A.do

B.is

C.does

D.are

11.They ________ their homework every day.

A. do

B.does

C. is

D.are

11.Lucy_______with her hands.

A.touch

B.touching

C.touches

D.touchs

12.Superdog________the boys

A.see

B.sees

C.seeing

D.ses

13.Supergirl and Superdog______them.

A.saves

B.save

C.saving

D.is saving

14.Jack_______their cow.

A.sells

B.sell

C.selling

D.are selling

15.Jack______up the beanstalk.

A.gets

B.get

C.climb

D.climbs

16.The giant ______boys.

A.e ating

B.don’t eat

C.eats

D.eat

17.The goose_______golden eggs.

y

ys

yed

yes

17.The woman_______the beanstalk.

A.cut

B.cutting

C.are cut

D.cuts

18.Her mother ______the beanstalk.

A.take

B.is take Ctakes D. taking

19Jack andher mother _____happer

A.does

B.are

C.is

D. have

20.He____the beans in the ground.

A.buy

B.puts

C.put

D.buys