必须 D. will将要。结合现在的实际情况，可知是必须，故选C。
3. 【德州市二O一五年初中学业水平考试英语试题】 —Mr. Wang, must I come again to clean the classroom on Sunday?
—No, you____ . I have asked Kate to do it. A. can’t 【答案】C
试题分析：句意：-王老师，我星期天必须再回来打扫教室吗？-不，不必，我已经让Kate去做了。can’t 不能，不会；mustn’t禁止，不要；needn’t 不必，没有必要；shouldn’t不应该。must的一般疑问句的回答中，肯定回答仍用must,否定回答用needn’t，故应选C。
4. 【江苏省盐城市2015年中考英语试题】Daniel, ___ play with the mobile phone while you're walking in the street. A. don't 【答案】A
试题分析：句意：Daniel，当你在街上散步的时候不要玩手机。don’t 不要；doesn’t用于主语是第三人称单数的时候；won’t不会，是will not的缩写；can’t不能，不会。这是一个祈使句，Daniel并不是句子的主语，而且是否定的形式，故在句首应该用don’t，选A。
5. 【河南省2015年中考英语试题】 kind and helpful to the people around us, and we will make the world a nicer place to live in.
A. Be B. Being C. To be 【答案】A
试题分析：句意：善良，乐于帮助我们周围的人，我们将会让世界变得更美好。“祈使句 + and + 简单句”是一个常用句型，这里的祈使句相当于一个条件状语从句，后面的简单句则相当于主句。而祈使句通常以原形动词开头，所以选A。
6. ________ in bed. It’s bad for your eyes.
A. Not to read B. Don’t read C. Don’t to read D. Not read 【答案】B
D. Been
B. doesn't
C. won't
D. can't
B. mustn’t
C. needn’t
D. shouldn’t
【解析】祈使句的否定句应该为Don’t do，所以选B。
基础演练
一、单项选择
1. picture books in class, please. A. Not read
B. No read
C. Not reading
D. Don't read
2. Ssh! talk loudly. The baby is sleeping right now. A. Do
B. Does
C. Don't
D. Doesn't
3. Do you wear a uniform at school? A. must
B. have to
C. may
D. can
4. You stop when the traffic light turns red. A. can
B. had better
C. need
D. must
5. --- you give your seat to this old man? --- Of course. A. Can
B. Shall
C. Need
D. Must
二、按要求转换句型
6. Throw that piece of paper away. (改为否定祈使句)
that piece of paper away. 7. Pick some flowers, please. (改为否定祈使句)
pick flowers, please. 8. I have to look after myself. (改为否定句)
I look after myself. 9. Andy has to study for a test. (改为一般疑问句)
Andy study for a test? 10. I can talk to Jenny's mother. (改为一般疑问句)
talk to Jenny's mother? 三、翻译(根据中文提示完成句子) 11. 请找布朗先生接电话好吗?
speak to Mr.Brown? 12. 在周末我喜欢去那儿，但是我得先做一些家务活。
I go there on weekends, but
I some housework first. 13. 地球是我们美丽的家园, 我们必须保持地球清洁。 The earth is our beautiful home.
We . 14. 不要在街道上打篮球。
in the street. 15. 禁止在草上行走。
on the grass. 答案 一、单项选择
1. D 2. C 3. B 4. D 5. A 二、按要求转换句型 6. Don't throw
7. Don't, any 8. don't have to 9. Does, have to 10. Can you
三、翻译(根据中文提示完成句子) 11. Can/May/Could I 12. like to; have to do 13. must keep it clean 14. Don't play basketball 15. Don't walk
巩固提高
1. Do your homework at home. (改为否定句)
your homework at home. 2. Do you have a good time at school? (改为同义句) Do you have at school?
3. I can eat in the dining hall. (就划线部分提问) you eat? 4. Please keep quiet in class. (改为同义句) Don't be in class. 5. Must we eat in the hallways? (作否定回答)
, . 6. You can't listen to music in the classroom. (改为祈使句)
music in the classroom.
