unit 1 Festivals around the world grammar 课件(人教课标必修3 )

1、Grammar Modal verbs 情态动词情态动词 (I) Unit1 Festivals around the world 主要情态动词主要情态动词 Can, could May, might Must/have to Need Dare Will/would Shall/should/ought to What modal verbs have you learned? 情态动词的语法特征情态动词的语法特征 1） 情态动词情态动词 不能单独做谓语，除不能单独做谓语，除ought外，后面只外，后面只 能接不带能接不带to 的不定式。的不定式。 2） 情态动词没有人称，数的变化，但有些情

2、态动情态动词没有人称，数的变化，但有些情态动 词，如词，如can、will也有一般式和过去式的变化。也有一般式和过去式的变化。 3） 情态动词的情态动词的“时态时态”形式并不是时间区别的主要形式并不是时间区别的主要 标志，不少情况下，情态动词的现在式形式和过去式标志，不少情况下，情态动词的现在式形式和过去式 形式都可用来表示现在时间、过去时间和将来时间。形式都可用来表示现在时间、过去时间和将来时间。 1) Some of us can use the computer now, but we couldnt last year. 2) The new-built theatre can sea

3、t 1500 people. 3) Can she be in the computer center? 4) I think what he said can not be true. 5) Can/Could I use your dictionary? 6) Could you lend me a hand? 1. 1.表能力表能力 3. 表示表示“请求请求” “允许允许”(表请求时，口语中常用表请求时，口语中常用 could 代替代替 can 使语气更委婉，回答时用使语气更委婉，回答时用can) 2. 表示推测，意为表示推测，意为“可能可能”“”“或许或许”，用于疑问句或否定句，用于疑

4、问句或否定句 1. can 与与could 4. 表示表示“许可许可”，可与，可与may 换用。换用。 You can go home now. 5. can 用于疑问句或否定句中时，表惊异、用于疑问句或否定句中时，表惊异、 不相信等，意思是不相信等，意思是“可能、能够可能、能够”。 How can you say that you really understand the whole story if you have covered only part of the article? 6. cant/ couldnt +have + done 表示对过去表示对过去 情况的否定推测情况的否

5、定推测 Susan cant have written a report like this. could + have + done 表示对过去能做而表示对过去能做而 未做的事情感到惋惜，遗憾未做的事情感到惋惜，遗憾;常译为本可以常译为本可以 Its a pity. Your class could have got the first prize. 1. Michael _ be a policeman, for hes much too short. A. neednt B. cant C. should D. may 2. Mr. Bush is on time for everyth

6、ing. How _ it be that he was late for the opening ceremony? A. can B. should C. may D. must 3. - I stayed at a hotel while in New York. - Oh, did you? You _ with Barbara. A. could have stayed B. could stay C. would stay D. must have stayed 4. My sister met him at the Grand Theater yesterday afternoo

7、n, so he _ your lecture. A. couldnt have attended B. neednt have attended C. mustnt have attended D. shouldnt have attended B A A A 2. may 与与might 1. 表示表示“许可许可”或或“请求请求”，有，有“可以可以”的意思，口语中的意思，口语中 常用常用 might 代代 may ,表示委婉语气。表示委婉语气。 否定回答时用否定回答时用“must not/can not”表表“禁止，阻止禁止，阻止”， 不用不用 “may not”. “may not” 表

8、示表示“可能不可能不” 。 Eg: 1)- May I watch TV after supper? - Yes, you may. / No, you mustnt. 2) Today is Sunday. She may not be in her office now. 2. 表示可能性。表示可能性。 意为意为“或许，可能或许，可能” might 比比 may 可能性小。可能性小。 Eg: 1) It might be true. 2) They may be in the library now. 3. May you +动词原形动词原形 表表“希望、祝愿、祈求希望、祝愿、祈求” “祝

9、你祝你” Eg: May you success. 1.Sorry Im late. I _ have turned off the alarm clock and gone back to sleep again. A. might B. should C. can D. will 2.Peter _ come with us tonight, but he isnt very sure yet. A. must B. may C. can D. will 3. Some people who dont like to talk much are not necessarily shy；th

10、ey just be quiet people. A. must B. may C. should D. would 3. will 与与would 1. 表表“请求、建议请求、建议”等，用等，用 would 比用比用will 委婉，客气些委婉，客气些 Eg: 1)Will you lend me your book? 2) Would you like a cup of tea? 2. 用于表示意志或意愿。用于表示意志或意愿。 will 指现在，指现在， 而而 would 指指 过去。过去。 Eg: 1) Ill never do that again. 2) They said that

11、they would help us. 3) No matter what I said, he wont listen to me. 3.表示习惯性动作。表示习惯性动作。 译作译作 “总是、惯于总是、惯于” will 指现在，指现在， would 指过去。指过去。 Eg: 1)He will often read all night. 2) Fish will die without water. 3) Every evening, she would sit by window, deep in thought. 4. 表示功能，译作表示功能，译作“能、行能、行” Eg: 1) That

12、will be all right. 2) This door wont open. 1.The way the guests _ in the hotel influenced their evaluation of the service A.treated B. were treated C. would treat D. would be treated What a pity. Considering his ability and experience, he _ better. A. need have done B. must have done C. can have don

13、e D. might have done Liza _ well not want to go on the trip - she hates traveling. A. will B. can C. must D. may Although this _ sound like a simple task, great care is needed. A. must B. may C. shall D. should D D B D 4. should 1. 用于表劝告、建议。用于表劝告、建议。 意为意为”应该、应当应该、应当”。 Eg: You should keep your promis

14、e. 2. 用于表推测。用于表推测。 意为意为 “可能、该可能、该” Eg: 1) Its 7 oclock, he should be at home. 2) They should have arrived by now. 3. 用于第一人称，表示说话人的谦逊、客气的语气用于第一人称，表示说话人的谦逊、客气的语气 I should advise you not to do that. 1. I dont care what people think. Well, you _ A. could B. would C. should D. might 2. What do you mean,

15、there are only ten tickets? There_ be twelve. A. should B. would C. will D. shall C A 5. must 1. 表示义务或强烈的劝告，意为表示义务或强烈的劝告，意为“必须必须”“”“应该应该”， 其否定式表示其否定式表示“不应该不应该”“”“不许可不许可” “不准不准”“”“禁止禁止”。 Eg: 1) You must finish your homework first. 2) Children mustnt speak like that to their parents. 2. 回答回答 must 所在的一

16、般疑问句时，否定回答用所在的一般疑问句时，否定回答用 “neednt” “dont have to”. Eg: -Must we finish the work tomorrow? -No, you neednt/ dont have to, but you must finish it in three days. 3. 表推测，用于肯定句，意为表推测，用于肯定句，意为“一定一定”“”“务必务必”。 Eg: 1) Betty must be in the next room. 2) He must be watering the flowers in his garden. Complete

17、 the following sentences using modal verbs. 1.Youve been working all day. You _ be very tired. 2. I wonder who that is. It _ be Lisa. Shes in the library at this time. 3. It is a long time since we met last time. You _ come and see us more often. 4. I havent decided where Im going for my holidays. I

18、 _ go to Australia. must can t should may 5. - Who was the man talking with your teacher? - Im not sure. It _ be her brother. 6. I dont know when the guests be here. They _ arrive at any time. might will / could 1. As he had heart attack, he was told that he _ continue the work. A. neednt B. may not

19、 C. mustnt D. cant 2. I _ like to make a suggestion. A. could B. would C. must D. might 3. I know things are hard with you, but you _ try to get over the difficulties. A. can B. may C. must D. ought C C B Choose the best answers. 4. We hope that as many people as possible _ join us for the picnic tomorrow. A. may B. must C. should D. can 5. I think Ill give Bob a ring. You _. You havent been in touch with him for ages. A. will B. may C. would D. should D D 6. It is usually warm in my