1.动词不定式的使用及其标志:

would like to do sth.       like to do sth.      want to do sth.    begin to do sth.

go   (to sw ) to do sth.     love to do sth.     learn to do sth.

something to eat.          want sb. to do sth.   would like sb. to do sth.

like sb. to do sth.          ask sb. to do sth.    It’s time to do sth.

decide to do sth.           stop to do sth     I have many things to do.

2.动词ing形式的使用及其标志:

(1)介词之后的动词应用ing形式, 常见的有:

How/What about doing sth.?    be good at doing sth.    thank you for doing sth.

(2) like doing sth.    enjoy doing sth.    practise doing sth.     mind doing sth.  

 spend some time doing sth.   find sb doing sth.     stop doing sth 

 do some cooking/cleaning/reading      go swimming/boating/shopping/fishing

(3)动名词做主语和表语 例如:

Swimming is my favourite sport. My favourite sport is swimming.

3. 祈使句,用原形. 使帮让之后用原形  例如: Come here.  Don’t go there.

let / help/ make  sb. do sth.

4. hear / see / watch  sb  do / doing  sth

习题. 用所给动词的适当形式填空.

1. I want ___________ ( be ) a teacher.

2. He begins _______________ ( have ) his classes at 7:30.

3. We go ______________ ( have ) sports every morning.

4. Uncle Wang loves _____________ ( make ) things.

5. He is learning _____________ ( write ) in Chinese.

6. Would you like something _____________ ( eat )?

7. Miss Gao likes us _____________ ( speak ) English every day.

8. Miss Gao asks us ______________ ( speak ) English every day.

9. It’s time _____________ ( get ) up.

10. You have much homework _____________ ( do ) today.

11. How/What about ____________ (go ) out for supper?

12. Meimei is good at ______________ ( swim ).

13. Thank you for ____________ ( help ) me.

14. Do you like ____________ ( watch ) TV?

15. I usually do some _____________ ( clean ) on Sundays.

16. Would you like __________ ( go ) __________ ( swim ) with me?

17. _________ ( come )and ___________ ( help ) me, please.

18. Let him ___________ ( have ) a try.

19. Jim often helps the old man __________ ( carry ) water.

20. She decided______________ to Guangzhou. (go)

21. They asked me _____________ with them last Sunday.  ( go, shop )

22. Do you mind ___________ (smoke ) here?

23. He practices ____________the guitar on Sunday . ( play)

24. Mother made me ____________(clean ) the house last weekend.

25. I enjoy ________________( read)  the article in the magazine.

26. She spends an hour ____________(talk) on the phone.

27. My sister saw a cat _____________(play) with a ball.

28. I often hear a girl ___________( sing ) in the next room.

29. You can find people ___________(eat) hamburgers in the restaurant.

30. Tom was tired . So he stopped _____________( work).