1、2022-3-21Modal Verbs Modal Verbs Unit 1Unit 12022-3-22我們以前學(xué)過(guò)哪些情態(tài)動(dòng)詞呢？ can/could, may/might, must/ have to, will/would shall/should (ought to), need, dare/dared2022-3-23情態(tài)動(dòng)詞表示說(shuō)話人的某種情態(tài)動(dòng)詞表示說(shuō)話人的某種感情或語(yǔ)氣，對(duì)某一動(dòng)作感情或語(yǔ)氣，對(duì)某一動(dòng)作或狀態(tài)的某種態(tài)度?；驙顟B(tài)的某種態(tài)度。表示表示“需要、可以、需要、可以、必須、應(yīng)當(dāng)必須、應(yīng)當(dāng)”等。等。 什么是情態(tài)動(dòng)詞？什么是情態(tài)動(dòng)詞？ (Modal Verbs)(Modal

2、 Verbs)2022-3-24 1. can的主要用法是：的主要用法是： A. 表能力表能力 eg. The girl can dance very well. be able to 通過(guò)努力做成某事通過(guò)努力做成某事 He was able to reach Mount Qomolangma in 2000. B. 表示說(shuō)話者的推測(cè)表示說(shuō)話者的推測(cè)事物的可能性事物的可能性:(否、疑）否、疑） eg. Can the news be true? C. 在口語(yǔ)中在口語(yǔ)中, can可以表示請(qǐng)求或允許可以表示請(qǐng)求或允許： eg. Can I sit here? can和和could2022-3-25

3、2. could的主要用法是：的主要用法是： A. could 是是can的過(guò)去式的過(guò)去式, 表示與過(guò)去表示與過(guò)去 有關(guān)的能力有關(guān)的能力和推測(cè)和推測(cè): We all knew that the young man couldnt be a doctor. B. could可以代替可以代替can表示請(qǐng)求表示請(qǐng)求, 但語(yǔ)氣較但語(yǔ)氣較can客氣、客氣、委婉委婉:could 提問(wèn)，答語(yǔ)用提問(wèn)，答語(yǔ)用can -Could I borrow your pen?-yes, you can.2022-3-26may 常用來(lái)表示：常用來(lái)表示： 1. 在正式文體中表示請(qǐng)求、允許（在正式文體中表示請(qǐng)求、允許（比比c

4、an正式）正式）：: eg. May I come in ? You may go now. 2. 表示說(shuō)話人的猜測(cè)表示說(shuō)話人的猜測(cè): “也許也許” “可能可能”: 通常只通常只用于肯定句和否定句中。用于肯定句和否定句中。The guest may arrive this afternoon.-Can he attend the meeting?-Yes, he_. I am not sure.may和和mightmay2022-3-273. 表示祝愿表示祝愿,位于句首位于句首 eg. May you succeed! May you have a good journey! 4. may a

5、s well=had better do (最好做某事）最好做某事） Youd better take notes carefully. You may as well take notes carefully. 2022-3-28will和和wouldwill是助動(dòng)詞是助動(dòng)詞還還是情態(tài)動(dòng)詞？是情態(tài)動(dòng)詞？ will用于構(gòu)成將來(lái)時(shí)是助動(dòng)詞。用于構(gòu)成將來(lái)時(shí)是助動(dòng)詞。 eg. I will tell you something important. 我要告訴你一件重要的事情。我要告訴你一件重要的事情。 情態(tài)動(dòng)詞：情態(tài)動(dòng)詞：1.表意愿或意志表意愿或意志 I will never do it again

6、. If you will marry me, whatever I have is yours, and yours is yours.2022-3-29 2.提出請(qǐng)求或建議提出請(qǐng)求或建議 ,在疑問(wèn)句中用于第二人稱。在疑問(wèn)句中用于第二人稱。 eg: Will you type this, please? 祈使句問(wèn)句與答語(yǔ)一般用祈使句問(wèn)句與答語(yǔ)一般用will Open the door, will you? - Please come to my party. - Yes, I will3. 表習(xí)慣或必然結(jié)果表習(xí)慣或必然結(jié)果 Fish will die without water. I wil

7、l go to see my former classmates on weekends. 2022-3-210would表表 示對(duì)過(guò)去的料想及猜想。示對(duì)過(guò)去的料想及猜想。It would be about ten when he left home.他離家時(shí)應(yīng)該是十點(diǎn)左右。他離家時(shí)應(yīng)該是十點(diǎn)左右。2022-3-211shall和和should shall 用法用法 1. shall表征求意見(jiàn)，用于一三人稱表征求意見(jiàn)，用于一三人稱 疑問(wèn)句中疑問(wèn)句中 Shall we go by train, Mom? Shall he attend the meeting?2.用于二用于二 三人稱三人稱 的陳

8、述句中，表威脅警告命令允諾等語(yǔ)的陳述句中，表威脅警告命令允諾等語(yǔ)氣氣 You shall get a present when I came back. You shall be punished if you break the rules.2022-3-212should 用法用法 應(yīng)該應(yīng)該=ought to You should study hard. 2. 表萬(wàn)一，多位于句首。表萬(wàn)一，多位于句首。1. Should he come, I would let you know.2022-3-213must的主要用法的主要用法1. 必須。必須。must表主觀表主觀“必須必須” have t

9、o 表客觀表客觀“不得不不得不” I must go home this Saturday. Ive got a cold, so I have to see a doctor. -Must I stay here? -Yes, you must./ No, you neednt./you dont have to.mustnt 表禁止，不準(zhǔn)，一定不要。表禁止，不準(zhǔn)，一定不要。 You mustnt play with fire. You mustnt take drugs. 2022-3-2142. 表表“偏要偏要”“”“偏偏偏偏”，違背說(shuō)話人意愿。，違背說(shuō)話人意愿。 Must you ta

10、lk in class? -How much do you earn? -Ill tell you if you must know it. 3. 一定，肯定一定，肯定 He must be crazy. He must have stayed up last night.2022-3-2151.He must be my English teacher,2.You must go shopping next week,3. He must have finished his homework,4. It must have rained yesterday,isnt he?wont you?

11、hasnt he?didnt it?4. 表推測(cè)的反應(yīng)，反義疑問(wèn)句中不能出現(xiàn)表推測(cè)的反應(yīng)，反義疑問(wèn)句中不能出現(xiàn)must的形式，的形式，反義形式取決于句中時(shí)態(tài)反義形式取決于句中時(shí)態(tài)2022-3-216need & dare (dared)情態(tài)動(dòng)詞情態(tài)動(dòng)詞 ：need/dare do sthneed/dare not do sth 實(shí)意動(dòng)詞：實(shí)意動(dòng)詞： need/dare to do sthdont/doesnt/didnt dare to do sth（無(wú)單三形式）（無(wú)單三形式）2022-3-2171.Being afraid of making mistakes ,he _ answe

12、r his teachers question A. doesnt dare B. doesnt dare to C. darent to D. not dare to 2.Having failed the exam. The little boy _go home and face his mom. A. dares not to B. dares not C. dare not to D. dare not 2022-3-218情態(tài)動(dòng)詞情態(tài)動(dòng)詞+have done should/ought to have doneshouldnt have donemust have donecant/

13、couldnt have donecould have doneneed have doneneednt have done(針對(duì)過(guò)去）針對(duì)過(guò)去）2022-3-219 1 Children under 12 years of age in that country _ be under adult supervision when in a public library. (2004 上海）上海） A. must B. may C. can D. need2022-3-2202 Some aspects of a pilots job_ be boring, and pilots often

14、_ work at inconvenient hours. （2006 湖南）湖南） A. can；have to B. may；can C. have to; may D. ought to; must 2022-3-2213The weather turned out to be fine yesterday. I _ the trouble to carry my umbrella with me. (2006 江西）江西） A should have taken B could have taken C neednt have taken D mustnt have taken2022

15、-3-2224 Hows your tour around the North Lake? Is it beautiful? It _ be, but it is now heavily polluted. （2007 全國(guó)全國(guó)I） A. will B. would C. should D. must 2022-3-2235 I told your friend how to get to the hotel, but perhaps I have driven her there. （2007 陜西）陜西） A. could B. must C. might D. should2022-3-

16、224根據(jù)漢語(yǔ)完成句子。根據(jù)漢語(yǔ)完成句子。 A: _(我可以跟朋友我可以跟朋友 去去) to the harvest festival? B: Yes, you may. A: If I want to be a doctor, _ _ (我應(yīng)該學(xué)理科嗎我應(yīng)該學(xué)理科嗎)? B: I think so. May I go with friendsshould I studyscience 2022-3-225 3. I dont know where she is, she _ _ (可能在武漢可能在武漢). 4. At this moment, our teacher _ (想必在批改想必在批改) our exam papers. 5. The road is wet. It _ (肯定下雨了肯定下雨了) last night. 6. Your mother _ _ (一定一直在找你一定一直在找你).maymust be markingmust have rainedmust have been lookingbe in Wuhanfor you2022-3-2267. Philip _ _(可能在車可能在車 禍中受了重傷禍中受了重傷