仁爱科普版八上英语Unit 2 Topic3 Must we exercise to prevent the flu Section B 同步练习（含答案）

Topic3 Must we exercise to prevent the flu Section B同步练习 一、单项选择 1. —Must we exercise to prevent the flu —No, we _____. A. mustn't B. needn't C. can't D. shouldn't 2. You _____ watch TV too much. It's bad for your eyes. A. shouldn't B. mustn't C. needn't D. may not 3. —I need to relax. —But you _____ do your homework first. A. should B. could C. would D. might 4. —Can you help me with my homework —Sorry, I _____. I have to do some cleaning. A. can't B. mustn't C. shouldn't D. needn't 5. He is busy. You _____ ask your classmates for help. A. should B. could C. would D. might 6. I'm sure I _____ finish my homework with the help of the computer. A. can B. could C. may D. might 二、用所给词的适当形式填空 1. You needn't _____ (come) if you are busy. 2. She should _____ (do) her homework by herself. 3. We mustn't _____ (be) late for class. 4. Could you please _____ (help) me with my English 5. He may _____ (go) to the park tomorrow. 三、句型转换 1. You mustn't watch TV too much. (改为同义句) You _____ _____ to watch TV too much. 2. She should do her homework first. (改为否定句) She _____ _____ her homework first. 3. Can you help me with my English (作肯定回答) Yes, _____ _____. 4. I'm sure I can finish my homework. (改为一般疑问句) _____ _____ sure you can finish your homework 5. He is busy. (改为同义句) He _____ _____. 四、根据汉语意思完成句子 1. 你不应该吃太多垃圾食品。 You _____ eat too much junk food. 2. 我们必须保持房间干净。 We _____ keep the room clean. 3. 他可能今天下午来。 He _____ come this afternoon. 4. 你能自己做这件事吗？ Can you do it _____ 5. 别忘了带相机。 Don't forget _____ _____ your camera. 答案与解析 一、单项选择 1. B must 引导的一般疑问句，否定回答用 needn't 或 don't have to，故选 B。 2. A shouldn't 表示“不应该”，“你不应该看太多电视，对眼睛不好”，故选 A。 3. A should 表示“应该”，“但是你应该先做作业”，故选 A。 4. A can't 表示“不能”，“对不起，我不能。我得打扫卫生”，故选 A。 5. A should 表示“应该”，“他很忙，你应该向同学求助”，故选 A。 6. A can 表示“能够”，“我确信在电脑的帮助下我能够完成作业”，故选 A。 二、用所给词的适当形式填空 1. come needn't 是情态动词，其后接动词原形。 2. do should 是情态动词，其后接动词原形。 3. be mustn't 是情态动词，其后接动词原形，be 动词的原形是 be。 4. help could 是情态动词，其后接动词原形。 5. go may 是情态动词，其后接动词原形。 三、句型转换 1. shouldn't be mustn't = shouldn't ，“不应该”。 2. shouldn't do should 的否定形式是 shouldn't ，其后接动词原形。 3. of course 肯定回答用 of course 或 sure 。 4. Are you 陈述句中有 be 动词 am，变为一般疑问句时，I 变为 you，am 变为 are 并提到句首。 5. is busy “is busy”=“isn't free”，表示“忙”。 四、根据汉语意思完成句子 1. shouldn't “不应该”是 shouldn't 。 2. must “必须”用 must 。 3. may “可能”用 may 。 4. yourself “自己”用反身代词 yourself 。 5. to take forget to do sth. 表示“忘记去做某事”。 ... ...