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1、Module 5 Rules and suggestions Unit 3 Language in use,情态动词本身有一定的含义，但不能单独作谓语，后跟 行为动词原形一起构成谓语，表示说话人的语态和情 态。情态动词没有人称和数的变化。,can, could, may, might, shall, should, must, need, dare, ought to, will, would, used to.,Revision,情态动词,帮你归纳,B,A,1. Could I cross the street here? Of course you_. A. could B. can C.
2、 be able to D. will 思路点拨： 此句中的could 表示委婉的语气，而不是表示过去时态。故回答时应用can，表示能够干某事。 2. Some people think trees _ on Tree Planting Day only. A. should be planted B. should plant C. should be planting D. be planted 思路点拨：表“义务”和“应该”时，用should。情态动词的被动语态为：情态动词+ be +done。,3. Must I do the work now? No, you _ . You may
3、 do it later. A. cant B. mustnt C. neednt D. shouldnt 思路点拨：用must 引导的一般疑问句，其回答形式：肯定回答用must， 否定回答用neednt。 4.You _ get there by bus. A. dont need B. neednt to C. dont need to D. need dont to 思路点拨：need既可以用作情态动词，又可以用作行为动词，短语有need to do sth.和need doing sth. = need to be done。,C,C,5. We won the English spe
4、aking contest. Congratulations! You _ be very proud of it. A. can B. need C. would D. must 6. She _ know the answer, but Im not sure. A. need B. may be C. may D. must 7. That man _ be our English teacher. Because he has gone to Beijing. A. mustnt B. shouldnt C. neednt D. cant 8.You _ swim in this pa
5、rt of the lake. Its dangerous. A. mustnt B. neednt C. may not D. wont,D,C,D,A,注意： 情态动词must ,may, might, can, could等都能表示“推测”。它们的推测程度由强到弱的顺序是： must, can, could, may, might。must表示有把握的推测，意思为“一定是，肯定是”，只用于肯定句， 表示对现在的推测。否定形式则用cant。 而mustnt 则表示“禁止”。,9. _ we go to the park on Sunday? Good idea! A. Would B. S
6、hall C. Must D. Need 10._to have lunch with us today? A. Do you likes B. Would you like C. Will you liked D. Have you liked 思路点拨：情态动词表“建议” 或“邀请”多用would 和should，常用的句式有:Would you like/love to? 和Shall we?,B,B,请求对方做某事 Will/Would/Could you.? Will/Would you please.? Would you mind doing.? Do you mind doin
7、g.? I wonder if you can . ?,Language points, 建议和邀请 Would you like/love to.? Shall we.? What do you think of.? What/ How about.? How do you like.? Youd better (not) do Why dont you.? Why not do .?, 表示“命令、禁止、不得不”常用must, mustnt , have to。 “没必要做某事” 常用neednt, dont have to或句型： It isnt necessary to do sth.
8、 There is no necessity to do sth.,Complete the rules.,Dont drink the water.,Dont climb the ladder.,No swimming.,You mustnt turn left.,Presentation,No parking. Dont play football. You mustnt stop here.,2,1,3,Match the pictures and the rules.,Match the signs and the rules.,1. Smoking is not allowed in
9、side the building. 2. All visitors have to report to reception. 3. Smoking is allowed outside the building. 4. Its best to bring a bottle of water on the trip.,C,F,B,E,5. Never go mountain climbing in bad weather. 6. Be careful of children crossing the road. 7. Its a good idea to allow at least an h
10、our to view the museum. 8. Its dangerous to stay out in the sunshine too long without a hat.,A,D,H,G,Work in pairs. Explain the rules., Why must you sign in when you come to the centre? So that they know who is there. Why must you climb with a partner? Why shouldnt you listen to music while youre cl
11、imbing? Why mustnt you light fires? Why shouldnt you talk on your mobile phone when youre climbing?,People are very (1) _ about the damage that is being done to the ancient forests of Britain. Many visitors to the forests use (2) _ to cut their names into the trees some of which are hundreds of year
12、s old. Although there are plenty of rubbish bins, people still throw rubbish into the (3) _ and this causes plants and fish to die.,worried,stones,stream,Complete the passage with the correct form of the words in the box.,keep stone stream tourist worry,tourists,keeping,A local conversation group is
13、 making a huge effort to help. Students and even retired people from the local villages have all got involved in cleaning up the forests, and they have already achieved good results. But we expect the (4)_ to play their part in (5)_ our forests clean, too!,You should _. You shouldnt _. You must _. Y
14、ou mustnt _.,put your rubbish in the bins,throw your rubbish into the stream,take care of the trees,write on the trees with stones,Now write some rules for visitors to the forests.,Read the passage and answer the questions. Why does one student think we must all try to save water? Because saving water helps to save our lives. What was one student trying to say with his drawing of a big shining bulb? He was trying to say that people mustnt waste energy., How has the school programme influenced students families? The chi
