Japanese people say Diaoyu islands belong to them. How should they say this. Even the dogs laugh at what they say. Must Japanse people change history? I cant stand their action.,Study the example: Ann: Hello, Tom. Did you enjoy the film? Tom: Yes, it was great. You should go and see it. 1)- 应该 The government should do something about the economy. - “Should we invite Sue to the party?” - “Yes, I think we should.”,2). 表推测，译“按理说” - Do you think youll be late home tonight? - I dont think so. I should be home at the usual time. She is studying very hard, so she should pass her examination. This photo should be developed tomorrow.,3). 用于suggest / advise / order /desire 等动词后的从句中 They insisted that we should have dinner with them. She demanded that I should apologize to her. His suggestion is that we should go out.,I didnt tell you about that, but how should you know it. You cant imagine that a well-behaved man should be so rude to a woman.,4) 表示惊讶, 翻译为 “竟然”,5). If should 如果，万一 If you should see Tom this evening, could you tell him to phone me? =( If you see Tom this evening, can you tell him to phone me? ) = Should you see Tom this evening, could you tell him to phone me? 如果相机坏了，我们出钱为您维修。 If this camera should break down, we would repair it at our expense. Should this camera break down, we would repair it at our expense.,must 用法,1) must 表推测，“一定” can用于疑问、否定句表推测 may/ might 表推测，一般不用于疑问句。 瞧！有人来了。可能是谁呢？ -Look! Someone is coming. Who can it be? 可能是Green 先生。 -It may/might be Mr. Green. 不可能是他，一定是Black 先生。 -No, it cant be him. It must be Mr. Black. 可能不是Black先生，我拿不准。 -It may not be Mr. Black. I am not sure.,2). Must 表“必须”： Must you go there right now? Yes, I must. No, I neednt. (=No, I dont have to.) mustnt 表“不许可、禁止” Tom, you _ leave all your clothes on the floor like this! You mustnt smoke in the hospital.,-Must he come to sign this paper himself? -Yes, he _. (06高考) A. need B. must C. may D. will,must,mustnt,3). Must 表“坚持要”, “偏要”： If you must leave, tell me and I will let you go. - Can I take off my coat? - If you must, you can. The machine must break down at this busy hour. As I was sitting down, the electric bell must ring.,Notes：must 用作名词时： Warm clothes are a must in the mountains.,-May I smoke here? -If you _, choose a seat in the smoking section.(2006山东) A. should B. could C. may D. must,must,John, look at the time. _ you play the piano at such a late hour?(2005全国卷III) A. Must B. Can C. May D. Need,Must,偏要,4). have to 表客观上“不得不”做的事, must 表说话人主观的“看法、观点”： If you want to go traveling in the summer holiday, you _be very strong. You dont have to do it by yourself. I _go now, because I _do my homework.,Some aspects of a pilots job _ be boring, and pilots often _ work at inconvenient hours. (06高考) can; have to B. may; can C. have to; may D. ought to; must,A,have to,must,have to,will/would,If you will allow me, I will see you home. 意愿 Will would you please post the letter for me? 征求意见 Oil will float on water. This window wont open. I would buy a ice candy after school when young. 过去常常,倾向性，译“会”,Shall 用法,You shall have a nice present for your birthday. You shall pay for what you have done one day. When he comes, nobody shall say a word. Nothing shall stop us from carrying out the plan. The law says that anyone whose salary reaches 1200 yuan shall pay income tax.,Can/ could的用法,1) 表示能力 We hope that as many people as possible _ join us for the picnic tomorrow. (06, 全国II) need B. must C. should D. can Black holes _ not be seen directly, so determining the number of them is a tough task.(06, 上海) A. can B. should C. must D. need,D,A,The fire spread through the hotel very quickly, but everyone _get out . can B. could C. was able to D. had to,C,2) can 译“有时候会” Accidents can happen in such rainy days. The weather of Chengdu in April can be very hot. The head teachers job can be tough sometimes because of the trivial things in class.,3）can, could用于疑问句和否定句中, 表推测； It cant be true, because I was on the scene that time. - Who can that boy be? - It cant be Obamas son. What could they be doing at this time of the day? Mr Bush is on time for everything. How can it be that he was late for the opening ceremony？ (上海2001春),mustnt 表示“不准”。,表示推测,（NMET2008浙江）You _ be hungry you had lunch only two hours ago! A. wouldnt B. cant C. mustnt D. neednt （NMET2008天津）She _ have left school, for her bike is still here. A. cant B. wouldnt C. shouldnt D. neednt 【解析】 两个考题中can用于中表示否定的推测，意为：不可能，一定不会；,B,A,（NMET2008福建）It is usually warm in my hometown in March, but it _ be rather cold sometime. A. must B. can C. should D. would （NMET2008辽宁）Peter _ be really difficult at times even though hes a nice person in general. A. shall B. should C. can D. must 【解析】两个考题中can表示理论上的可能性，翻译为：有时候会,B,C,5. (NMET2008全国II) Liza _ well not want to go on the trip - she hates traveling. A. will B. can C. must D. may 【解析】may well为固定搭配，意为：很可能，极有可能。 6. (NMET2008四川) Although this _ sound like a simple task, great care is needed. A. must B. may C. shall D. should 【解析】这听起来或许是一项简单的任务，但却需要极大的细心。,