四年级英语语法精讲要点及习题1(2)

否定句：主语+ don't( doesn't ) +动词原形(+其它)。如：

I don't like bread.

当主语为第三人称单数时，要用doesn't构成否定句。如：

He doesn't often play.

一般疑问句：Do( Does ) +主语+动词原形+其它。如：

- Do you often play football?

- Yes, I do. / No, I don't.

当主语为第三人称单数时，要用does构成一般疑问句。如：

- Does she go to work by bike?

- Yes, she does. / No, she doesn't.

特殊疑问句：疑问词+一般疑问句。如：How does your father go to work?

动词+s的变化规则

1．一般情况下，直接加-s， 如：cook-cooks, milk-milks

2．以s. x. sh. ch. o结尾，加-es， 如：guess-guesses, wash-washes, watch-watches, go-goes

3．以“辅音字母+y”结尾，变y为i, 再加-es，如：study-studies

一般现在时用法专练:

一、 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、用括号内动词的适当形式填空。

1. He often ________ (have) dinner at home.

2. Daniel and Tommy _______ (be) in Class One.

3. We _______ (not watch) TV on Monday.

4. Nick _______ (not go) to the zoo on Sunday.

5. ______ they ________ (like) the World Cup?

6. What _______they often _______ (do) on Saturdays?

7. _______ your parents _______ (read) newspapers every day?

8. The girl _______ (teach) us English on Sundays.

9. She and I ________ (take) a walk together every evening.

10. There ________ (be) some water in the bottle.

11. Mike _______ (like) cooking.

12. They _______ (have) the same hobby.

13. My aunt _______ (look) after her baby carefully.

14. You always _______ (do) your homework well.

15. I _______ (be) ill. I’m staying in bed.

16. She _______ (go) to school from Monday to Friday.

17. Liu Tao _______ (do) not like PE.

18. The child often _______ (watch) TV in the evening.

19. Su Hai and Su Yang _______ (have) eight lessons this term.

20. －What day _______ (be) it today?－ It’s Saturday.

三、按照要求改写句子