浙江省象山中学高中英语《Unit1 Festivals around the world Learning Plan （III）for Grammar》导学案（无答案）新人教版必修3.doc

unit1 festivals around the world learning plan （iii）grammar学习目标：掌握情态动词may/might; will/would; can/could ;shall/should; must/cant的用法重点知识：情态动词的用法难点知识：以上5组情态动词的区别与联系自主预习一、自主学习1. must 的主要用法。 表示必须、必要 we must do everything step by step . 表一定（只用在肯定句中） he must be an honest boy. must +have +过去分词的结构，常用在肯定句中，表示对过去发生行为的推测，含有“一定”、“准是”的意思。否定和疑问句用can。she must have studied english before. must 的否定式有两个：当回答由must引起的问题时，否定答复要用needn t或dont have to表示“不必”、“无须”、“用不着”、“不一定”的意义。mustnt表示“不应该”、“不许可”、“禁止”must i go tomorrow? 明天我必须去吗？ yes, please.是的，请吧！ no , you neednt. 不，你不必去。(4) have to和must 的区别 含义和用法上的区别，have to强调客观需要做某事，即表示由于客观外界的条件的需要不得不做某事，含有“形势逼迫”的意味，must强调说话者主观上认为必须做某事，含有“主观判断”的意味。my bike was broken on my way to school. i had to walk there. 我的自行车在上学的路上坏了， 我不得不走路去上学。we must learn english well. 我们必须学好英语。 否定式的区别：have to 的否定式意思为“不必”，must的否定式mustnt 意为“禁止，不允许”。因此，以must 开头的一般疑问句的肯定回答为“yes, 主语+must.”。否定回答为“no, 主语+neednt / dont have to.”.must i finish the homework now? 我必须现在完成作业吗？yes, you must. /no, you neednt. 是的，你必须现在完成。（不，你不必。）3. ought to 的用法 表示义务，意为“应该”(因责任、义务而该做)，口气比should稍重。we ought to defend our country.我们应当保卫我们的国家。 you ought to respect your parents.你应当尊敬你的父母。 表示推测，暗含很大的可能，可译为“应该是，会是”。prices ought to come down soon.价格可能会很快下跌。 ought to和should的含义较近，但不完全相同。ought to表示“应该”，是从“义务”或“按理推断”的角度来讲的。should则是从说话人的个人看法这一角度来讲的。you are her mother. you ought to look after her.你是她的母亲，你应当照管她。(是道义上的责任，不能和should互换。)we should encourage him, for we are his classmates.我们应该鼓励他，我们是他的同班同学啊！二、find the sentences in the text that use modal verbs and underline them.三、我的疑惑？合作探究案i.合作探究：一、explain the meanings of the modal verbs in the following sentences and choose the best answer.a.intention b. duty c. promise d. possibility e. guessing1. by lunchtime they would all be sold. ( ) 2. his restaurant ought to be full of people. ( )3. what could have happened? ( )4. nothing could have been better? ( )5. something terrible must have happened. ( )6. i will take all that fat off you in two weeks( ). 7. he could not believe his eyes. ( )8. he wondered if he should go to the library to find out. ( )9. he couldnt have yong hui getting away with telling people lies. ( )10. he had better do some research. ( )二、能力提升1. what do you mean, there are only ten tickets? there be twelvea. should b. would c. will d. shall2. it_ have been tom that parked the car here, as he is the only one with a car.a. may b. can c. must d. should 3. one of the few things you _ say about english people with certainty is that they talk a lot about the weather. a. need b. must c. should d. can 4. i dont care what people think. well, you . a. could b. would c. should d. might 5. i cant leave. she told me that i stay here until she comes back. a. can b. must c. will d. may 6. its the office! so you know eating is not allowed here. oh, sorry. a. must b. will c. may d. need 7. he did not regret saying what he did but felt that he it differently. a. could express b. would express c. could have expressed d. must have expressed 8. hi, tom . any idea where jane is? she _in the classroom . i saw her there just now.a. shall be b. should have been c. must be d. might have been9. some people who dont like to talk much are not necessarily shy；they _just be