人教七下英语专题must和have_to(易错考点回顾+闯关提分训练)

1、【易错考点回顾】must和have to【易错点睛】1. 表示必须此时可用于肯定句、否定句或疑问句，用于否定句时，mustnt的意思是“一定不要、不能”。如：You must finish the work tonight. 你必须今晚完成这项工作。 Adverbs mustnt be put between the verb and the object. 副词不能放在动词和宾语之间。【注意】对于must开头的一般疑问句，若作否定回答，可以用neednt，不能用mustnt。如：Must I clean all the rooms? 这些房间我都得清扫吗?No, you neednt. 不，

2、不必。2. 表示推测意为“一定是”，通常只用于肯定句，表示有把握的肯定推测。如：Janes light is on. She must be at home. 简的房间里开着灯。她一定在家。3. must与have to的区别must侧重于说话者的主观看法，认为有必要或有义务去做某事Everyone must keep the law. 人人都要守法。have to 则重于客观需要，含有“不得不”“被迫”之意The last train has gone. Well have to walk home. 最后一班车已经开了，我们得走回家了。从时态方面看，must 只有现在时一种形式，而have

3、 to则有多种时态形式。如：You will have to show your papers at the gate. 在大门口你得出示证件。【典型错题】If you know nothing about the famous program called Where are we going, dad?, you _ be living in a box!A. would B. can C. must D. need【错因分析】本题的关键是对语境的理解，对句意的把握会直接影响能否正确判断空格处所缺情态动词的意思。其次，如果没有掌握选项中四个情态动词的用法，也会影响正确作答。【思路点拨】首先

4、要理解题干中句子的意思，然后弄清楚四个选项中情态动词的用法，再结合句意判断空格处要表达的是肯定推测“一定是”，再结合选项得出正确答案。【正确答案】正确答案为C。句意：如果你对爸爸去哪儿了这个著名的节目一无所知，那你一定是生活在盒子里。根据上文提示此空是表示肯定的推测，“一定是”要用情态动词must，故选C。【中考链接】 1. (2018 重庆)You _ stop when the traffic lights(交通灯) turn red.A. cantB. may C. mustD. neednt【答案】C解析：句意：交通灯变红时你_停车。A. cant不能，B. may可能，C. must

5、必须，D. neednt不必，根据句意，答案选C。 2. (2017 福建) Mum, may I go swimming now?Yes, dear, but remember that you _ go with your dad.A. mayB. canC. must【答案】C解析：句意：妈妈，我现在可以去游泳吗?是的，亲爱的，但是记住你必须和你爸爸一起去。may可以；can可能；must必须。根据语境可知这里用must。故选C。3. （2017 黔西南州）Must I leave now? Its still raining hard outside.No, you _.You can

6、 wait till the rain stops. A. dont have toB. couldntC. cantD. shouldnt【答案】A解析：句意：我必须现在离开吗？外面还在下雨。不，你不必你可以等到雨停。dont have to不必；couldnt不能；cant不能；shouldnt不应该。在回答以must开头的一般疑问句时，肯定回答用Yes, sb. must，否定回答用No, sb. neednt或dont have to，结合句意，答案选A。【闯关提分训练】must和have to1. Can you go shopping with us this afternoon?

7、Sorry, I cant. I _ look after my little sister.A. can B. may C. have to2. May I smoke here?No, you _. This is a no-smoking room.A. neednt B. mustnt C. need D. wouldnt3. Someone is knocking at the door. It _ be my mother. Its time for her to be back.A. can B. may not C. must D. mustnt4. You _ take me

8、 to the station. My brothers taking me. A. cant B. mustnt C. shouldnt D. dont have to5. Sorry, Miss Liu. I left my workbook at home. Must I hand it in(上交它) today? No, you _. You _ bring it here tomorrow.A. mustnt; should B. cant; must C. mustnt; may D. neednt; can6. Excuse me, sir, visiting hours(探视

9、时间) are over. You _ leave.Pardon me(对不起), nurse. I didnt hear the bell(铃声).A. may B. can C. must D. need7. The children _ play basketball on the road.A. cant B. can C. mustnt D. must8. You _ go and see a doctor at once because you got a fever(发烧). A. can B. must C. dare D. would9.Mum, must I finish

10、the homework now?No, you _.You can do it after supper.A. needntB. mustnt C. cantD. may not10. (2018 盐城一模）Sorry! I cant follow you. I _ finish my homework first.A. can B. may C. must D. could11. (2018济南三模) Must I answer the question in English?No, you _. A. cantB. mustnt C. neednt D. shouldnt12. Yest

11、erday it rained heavily when school was over. We _ stay in our classroomA. mustB. shouldC. had toD. need13. I cant go with you. I _ stay at home until my parents come back.A. canB. mayC. mustD. could14.Must I finish the work today?No, you _. But you _ finish it next Monday. A. mustnt; mustB. neednt;

12、 mustC. mustnt; couldD. neednt; could15. _ you _ wear your sports shoes for P.E. class?Yes, we do.A. Have; toB. Do; haveC. Do; have toD. Does; have to16. May I go out now, Dad?Well, you _ finish your school work first.A. canB. mayC. needD. must17. Why cant Nancy come to your party?Because she _ do her homework.A. canB. cantC. has toD. doesnt have to18. (2018 河西区一模) Mike _ finish the work at once. He can finish it tomorrow.A. must B. have to C. shouldnt D. doesnt have to 19. We shouldnt arrive late for class. We _ be on time.A. mustB. mayC. coul