必修3Unit1Festivalsaroundtheworld情態(tài)動詞

1、In this lesson, we will go over what we have learned Modal Verbs情態(tài)動詞表說話人的某種感情情態(tài)動詞表說話人的某種感情或語氣，對某一動作或狀態(tài)的或語氣，對某一動作或狀態(tài)的某種態(tài)度。表示某種態(tài)度。表示“需要、可以、需要、可以、必須、應當必須、應當”等。等。 情態(tài)動詞情態(tài)動詞 ( modal verbs)1) Some of us can use the computer now, but we couldnt last year.2) The new-built theatre can seat 1500 people.3) Can

2、she be in the computer center?4) I though what he said could 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“請求請求” “允許允許”(表請求時，口語中常用表請求時，口語中常用 could 代替代替 can 使語氣更委婉，回答時用使語氣更委婉，回答時用can)2. 表示推測，意為表示推測，意為“可能可能”“”“或許或許”，用于疑問句或否定句，用于疑問句或否定句1. can 與與could4. 表示

3、表示“許可許可”，可與，可與may 換用。換用。You can go home now.5. can 用于疑問句或否定句中時，表驚異、用于疑問句或否定句中時，表驚異、不相信等，意思是不相信等，意思是“可能、能夠可能、能夠”。How can you say that you really understand the wholestory if you have finished only part of the article?6. cant/ couldnt +have + done 表示對過去表示對過去 情況的否定推測情況的否定推測Susan cant have written a rep

4、ort like this.7. could + have + done 表示對過去能做而表示對過去能做而 未做的事情感到惋惜，遺憾未做的事情感到惋惜，遺憾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. may2. Mr. Bush is on time for everything. How _ it be that he was late for the openi

5、ng ceremony? A. can B. should C. may D. must3. - 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 stayed4. My sister met him at the Grand Theater yesterday afternoon, so he _ your lecture. A. couldnt have attended

6、 B. neednt have attended C. mustnt have attended D. shouldnt have attendedBAAA2. may 與與might1. 表示表示“許可許可”或或“請求請求”，有，有“可以可以”的意思，口語中的意思，口語中 常用常用 might 代代 may ,表示委婉語氣。表示委婉語氣。 否定回答時用否定回答時用“must not”表表“禁止，阻止禁止，阻止”， 不用不用 “may not”. “may not” 表示表示“可能不可能不” 。Eg: 1)- May I watch TV after supper? - Yes, you ma

7、y. / No, you mustnt. 2) Today is Sunday. She may not in her office now.2. 表示可能性。表示可能性。 意為意為“或許，可能或許，可能” might 比比 may 可能性小?？赡苄孕?。Eg: 1) It might be true. 2) They may be in the library now.3. may/ might as well + 動詞原形動詞原形 “還是還是的好的好” Eg: You may as well go and have a look.4. May you +動詞原形動詞原形 表表“希望、祝愿、祈

8、求希望、祝愿、祈求” “祝你祝你”Eg: May you succeed!1.Sorry Im late. I _ have turned off the alarm clock and gone back to sleep again. A. might B. shouldC. can D. will2.Peter _ come with us tonight, but he isnt very sure yet. A. must B. may C. can D. willAB3. will 與與would 1. 表表“請求、建議請求、建議”等，用等，用 would 比用比用will 委婉，

9、客氣些委婉，客氣些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 指現(xiàn)在，指現(xiàn)在， 而而 would 指指 過去。過去。Eg: 1) Ill never do that again. 2) They said that they would help us.3.表示習慣性動作。表示習慣性動作。 譯作譯作 “總是、慣于總是、慣于” will 指現(xiàn)在，指現(xiàn)在， would 指過去。指過去。Eg: 1) He will often read all night.

10、 2) Fish will die without water. 3) Every evening, she would sit by window, deep in thought.4. 表示功能，譯作表示功能，譯作“能、行能、行”Eg: 1) That will be all right. 2) This door wont open.5. 用于否定句中，表示用于否定句中，表示“不肯、不樂意不肯、不樂意”Eg: No matter what I said, he wont listen to me.4. should1. 用于表勸告、建議。用于表勸告、建議。 意為意為”應該、應當應該、應當

11、”。Eg: You should keep your promise.2. 用于表推測。用于表推測。 意為意為 “可能、該可能、該”Eg: 1) Its 7 oclock, he should be at home. 2) They should have arrived by now.5. shall 與與will1. Shall 與第一、三人稱連用，且用在疑問句中時，與第一、三人稱連用，且用在疑問句中時， 表說話人征求聽話者的允諾。表說話人征求聽話者的允諾。 Will 與第二人稱連用，且出現(xiàn)在疑問句中時，與第二人稱連用，且出現(xiàn)在疑問句中時， 表示請求。表示請求。 Would 更客氣。更客氣

12、。Eg: 1) Shall we begin our discussion? 2) Shall the driver wait? 3) Will you speak louder, please?2. shall的主語是第二、三人稱的陳述句，表示說話人的主語是第二、三人稱的陳述句，表示說話人 的允諾、警告、命令等語氣。的允諾、警告、命令等語氣。 will 的主語是第一、二、三人稱的陳述句，的主語是第一、二、三人稱的陳述句， 表意志、意愿。表意志、意愿。Eg: 1)You shall get the book tomorrow. 2) He shall be punished. 3) You s

13、hall go with me. 4) If you will come to my house, I will show you my new painting.允諾允諾警告警告命令命令6. must1. 表示義務或強烈的勸告，意為表示義務或強烈的勸告，意為“必須必須”“”“應該應該”， 其否定式表示其否定式表示“不應該不應該”“”“不許可不許可” “不準不準”“”“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

14、 所在的一般疑問句時，否定回答用所在的一般疑問句時，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. 表推測，用于肯定句，意為表推測，用于肯定句，意為“一定一定”“”“務必務必”。Eg: 1) Betty must be in the next room. 2) He must be watering the flowers in his garden. 情態(tài)動詞情態(tài)

15、動詞 + have done這是歷年高考熱點之一，這是歷年高考熱點之一，可表示可表示“推測、責備、懷疑推測、責備、懷疑”等多種意義。等多種意義。一、表示對過去事情的推測或估計一、表示對過去事情的推測或估計1. must have done “想必或肯定已經(jīng)做了某事想必或肯定已經(jīng)做了某事” eg: The ground is rather wet, so it must have rained last night.2. may/might have done “可能可能/大概已經(jīng)做了某事大概已經(jīng)做了某事” eg: Tom may have gone to shanghai, but I sti

16、ll not sure about it.3. cant/couldnt have done “不可能已經(jīng)做了某事不可能已經(jīng)做了某事” eg: The ground is very dry, so it cant have rained last night注：在疑問句中注：在疑問句中 can/could 表示對過去情況的疑問性表示對過去情況的疑問性 推測，推測，“可能已經(jīng)可能已經(jīng)了嗎？了嗎？” eg: Someone must have broken into our bedroom, Who could have done it?二、表示對過去所發(fā)生事情的遺憾或責備二、表示對過去所發(fā)生事情

17、的遺憾或責備1. should/ought to have done “過去本該做而沒做過去本該做而沒做” eg: I really regretted wasting the hours when I should have studied hard, but it was too late.2. shouldnt/oughtnt to have done “過去不該做的事卻做了過去不該做的事卻做了” eg: Im very sorry for the words I shouldnt have said to you at that moment.3. could/might have d

18、one “本來能夠做的事卻沒做本來能夠做的事卻沒做” eg: He could have worked out the problem.4. neednt have done “原本不必做的事卻做了原本不必做的事卻做了” eg: Your home is not far from your school, so you neednt have left in such a hurry. 5. would rather have done “本想做卻未做成本想做卻未做成” eg: I would rather have come to help you with your English, but I was too busy at that time.