动词第三人称单数的变化规则及练习.doc

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 , practises 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_______

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. Suhai 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 English?         __________________
2. Does he like going fishing?             __________________
3. He likes play games after class.         __________________
4. Mr. Wu teaches us English.                __________________
5. She doesn’t do her homework on Sundays. _________________

课堂练习二
一、写出所给词的第三人称单数形式
sit swim read make run write have
go do watch cry study play say wash
二、用do或does的适当形式填空
1. _____ you ride a bike to school? Yes, I ________.
2. ______ your sister like PE? No, she ________.
3. What_______ the students have? They have some pens.
4. How_______ Linda go to school? She goes to school on foot.
5. He _______ not speak English. He speaks Chinese.
6. _______ they watch TV on Sundays? Yes, they _______.
7. My father and mother ______ not read newspapers on Saturday.

三、句型转换
1. I go to school by bus. (用He做主语变否定句)
________________________________________
2. Kim plays baseball very well. (变一般疑问句)
________________________________________
3. David doesn’t like learning French. （变肯定句）
________________________________________
4. Alan doesn’t watch TV on school nights. （变肯定句）
________________________________________
5. We have enough time to do it. (变否定句)
________________________________________
6. Snoopy has a car. （对划线部分提问）
_______ _______________________________________________________
7. Do you have a pencil? (把主语改成she)
_________ _______________________________________________________
四、动词的适当形式填空
Jim’s father  (work) in a bank.
He (go) to work by bus every morning, sometimes he  (ride) his bike.
But he  (be) never late for work. He (work) very hard.
Jim  (like) his father very much. They often （play） badminton（羽毛球）in front of their house, sometimes they (play) table tennis in Jim’s school.
Jim  (like) to talk with his father. His father (like) to hear Jim talking about his friends and his school. On Saturday or Sunday, they often (play) on the computer. Jim   (have) many computer games. But he doesn’t  (play) them every day. He also (work) hard at his lessons.