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、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+y接尾的动词：变y为i+es

例如：fly-flies

动词短语：

+s: Plays, skips, sings, gives, starts, likes,

buys some toys, gets up comes back home

makes noodles, eats lunch drinks coffee

begins his class , practices the piano

+es : watches TV brushes his teeth

goes to bed goes to school

does my homework does some reading

y→ i+ es: fly → flies study →studies

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

写出下列动词的第三人称单数

drink ________ go _______ stay ________ make ________look_________ have_______ pass_______ carry

_____come________ watch______

plant_______ fly ________

study_______brush________

do_________ teach_______practice________

二、请看下面两组句子，注意区分他们的共同点和不同点。

I go to school every day.

I don't go to school every day.

He goes to school every day.

He doesn't go to school every day.

Do you go to school every day?

Yes, I do. (No, I don't)

Does he go to school every day?

Yes, he does. (No, he doesn't)

注：

1）第三人称单数用了does 后面就不用动词的s形式了,而用动词原形.。

2）变为疑问句,要在句首加"Do, Does ; 变为否定句, 要在动词前面加"do not ,does not", 可以简写为"don't, doesn’t。

课堂练习一

一、把下列句子改成一般疑问句并做肯定、否定回答。

1．I usually get up at six o’clock.

Do you usually get up at six ?

Yes, I do . /No, I don’t .

2. We usually write e-mails on Saturday evening

？Yes, No,

3. They have the same hobby.

？Yes, No,

4. Su Hai and Su yang like listening to music after school.

？Yes, No,

5. Helen usually watches TV in the evening.

？Yes, No,

二、否定句:在动词前+doesn't或don't.

1. She_____ _____(do)her homework every day.

2. He_____ _____(live)in Huanggang.

3. The girl_____ _____(look)out of the window and sees many birds in the sky.

4. Jenny runs home and_____ _____(sit)on the chair.

三、一般疑问句:

1._____the desk_____(have)four legs? Yes, it does.

2._____she____(do)her homework every day? Yes, she does.

3._____he_____(live)in Huanggang? No, he doesn't.

4. Does Danny_____(see)the apple tree?

四、按照要求改写句子：

1. I do my homework every day.(改为一般疑问句，作否定回答)

_____________________________________ ___________________

2. She likes milk.(改为一般疑问句，作肯定回答)

_____________________________________ _______________________

3. Amy likes playing computer games.(改为一

般疑问句，作否定回答)

_____________________________________ ______________

4. We go to school every morning.(改为否定句)

_____________________________________ __________________

5. I like taking photos in the park.(对划线部分提问)

_____________________________________ ___________________

6. John comes from Canada.(对划线部分提问) _____________________________________ ______________

7. Simon and Daniel like going skating.(改为否定句)

_____________________________________ ______________

五、改错(划出错误的地方，将正确的写在横线上)

1. Is your brother speak