高中英語語法情態(tài)動詞公開課課件 (2).ppt

1、Try some Tongue Twisters,Can you can a can as a caner can a can? 2. How much wood would a woodchuck chuck if a woodchuck could chuck wood? 3. How many cookies could a good cook cook if a good cook could cook cookies?,What kind of verb are the underlined words ?,你可以像裝罐工人那樣裝罐頭嗎?,如果一只土撥鼠會扔木頭,那么會扔多少木頭呢?

2、,如果一個好的廚師能做小甜餅，那么他能做多少小甜餅?zāi)兀?They are modal verbs.,Modal verbs,Welcome to our English class,一. We use modal verbs to talk about:,1. Ability （能力） 2. Obligation （義務(wù)） 3. Certainty （可能性） 4. Permission （允許）5. Make requests（提出請求） 6. Make suggestions（提出建議） 7. Make offers（提供幫助） 8. Give advice（提出意見）,1.Ability

3、 (能力):,Liu Xiang can run the 110m hurdle race within 13 seconds.,can/could:,1. can 一般表示與生俱來的能力或者一種客觀可能性,還可以表示請求和允許 。,Learning English _ be difficult.,can,Man can not live without air.,_ I use your bike?,Can,can/could:,2.在疑問句中，用could可表示請求，語氣較委婉。, _I have the television on? Yes, you _. / No, you _,Cou

4、ld,He asks if he _ smoke here.,could,can,cant/Im afraid not,can/could:,3.表示驚異、懷疑、不相信的態(tài)度。（主要用在否定句、疑問句或驚嘆句中）,Hes such a nice person that he _ commit the crime!,cant,你怎么會如此地粗心！,How can you be so careless!,_ this be true?,Can,can/could:,4. can never/canttoo表示“無論怎樣也不過分”，“越越好” 。,你過馬路的時候再小心也不為過。,You cant b

5、e too careful while crossing the road.,Im so tired! I have to do the training for at least 10 hours a day!,2.Obligation (義務(wù)):,yet he must work hard to win the gold medal.,Although Liu Xiang is so gifted in hurdle race,注意： must可表示“堅持，一定要”（常用于固定句型：if you must do sth. 如果你非得要做某事）,如果你真的要走，那就悄悄離開。,If you

6、leave, do it quietly.,must,Attention:,Your mother brings you up and takes good care of you, so when she is old, you _ look after her in return.,A.can B.may C.have to D.must,Shi Dongpeng might win a medal at the Olympic Games.,Although the chance of winning a medal is small, Ill try my best!,3.Certai

7、nty (可能性) :,Attention:,1.He _ be at home.,2.He _ be at home, for he just called me from his home 15 seconds ago.,A.may B.might C.must,A.may B.might C.must,情態(tài)動詞表示猜測是高考熱點之一： mustshouldcancouldmaymight（可能性）,情態(tài)動詞+不定式完成式“責備”等多種意義。 need have done neednt have done shoudnt/oughtnt to have done should /ought

8、 to have done would rather have done,注意：對于現(xiàn)在和將來的推測用“情態(tài)動詞+動詞原形”，對于過去的推測用“情態(tài)動詞+不定式完成式”。 Eg: may/might have done 可能已做了 cant have done 不可能做了,本需要做但沒做,本不必做但做了,本不該做但做了,本該做但沒做,本想做但沒做,4.Permission (允許):,May I eat KFC if I win the gold medal?,may/might:,1. 表示許可。表示請求、允許時，might比may的語氣更委婉一些。, Might/May I use you

9、r computer? Yes, you may. /No, you may not/mustnt.,5.Making requests (提出要求):,Can you help me with my training?,I dont know how to use this equipment!,6.Making suggestions (提出建議):,Shall we do the training in the morning?,Its too hot to take exercise in the afternoon.,shall:,1.Shall用于第一、第三人稱疑問句中，表示說話人

10、征求對方的意見、向?qū)Ψ秸埵净蛱峁椭?。,1.Shall we begin our lesson? 2.When shall he be allowed to leave hospital? 3.Shall I carry this bag for you?,shall:,2.Shall用于第二、第三人稱，表示說話人給對方命令、警告、允諾或威脅。,You shall fail if you dont work harder. He shall be punished according to the rule. 等我讀完這本書，就會給他的。,He shall have the book whe

11、n I finish it.,警告,威脅,允諾,7.Making offers (提供幫助):,Dont worry, dear, I will wash them right away.,Mom, my dirty clothes have been piled up! I dont have time,8.Giving advice (提出意見):,You should not/ought not to eat so much before running.,How delicious!,2. should表示意外或驚訝 常譯為 “居然，竟然”。 I cant believe such a

12、 gentleman should be so rude to the old. 我不敢相信這樣一個紳士居然對老人如此無禮。,should:,7. 情態(tài)動詞的做題技巧:,1. 充分利用句子語境。綜觀歷年高考英語情態(tài)動詞的考查情況，有相當一部分考題從本質(zhì)上看都是在考查情態(tài)動詞在具體語境中的運用，即只要考生能弄清各個被考查情態(tài)動詞的意思，就可作出正確選擇。如：,Lucy doesnt mind lending you her dictionary. She _. Ive already borrowed one. A. cant B. mustnt C. neednt D. shouldnt 分析

13、：答案選C。既然“我已經(jīng)借了一本”，據(jù)此語境所以“她就沒有必要借給我了”。,2.根據(jù)時間確定時態(tài)。即要分清情態(tài)動詞表推測時涉及的是現(xiàn)在情況還是過去情況。原則上說，若對現(xiàn)在情況進行推測，情態(tài)動詞后接動詞原形或進行式；若對過去情況進行推測，則后接動詞的完成式；,This cake is very sweet. You _ a lot of sugar in it. A. should put B. could have put C. might put D. must have put 分析：答案選D。前文說“蛋糕很甜”，下文“你一定是在里面放了很多糖”，故用“must have done”表示對

14、過去情況的肯定推測。,對現(xiàn)在或?qū)淼耐茰y常用結(jié)構(gòu)為： 情態(tài)動詞+_/_ 對過去情況的推測常用結(jié)構(gòu)為： 情態(tài)動詞+_ 如：,do,be doing,have done,（2010江西卷23） I have told you the truth. I keep repeating it? A. Must B. Can C. May D. Will,A,能力提升：高考練兵場,（2011江西卷23） It _ be the postman at the door. Its only six oclock. A. mustntB. cant C. wontD. neednt,B,能力提升：高考練兵場,（

15、2012江西卷22） We _ have bought so much food now that Suzie wont be with us for dinner. may notB. neednt C. cant D. mustnt,B,能力提升：高考練兵場,（2013江西卷23） When I was a child, I _ watch TV whenever I wanted to. A. should B. could C. must D. need,B,能力提升：高考練兵場,Who is the luckiest guy?,A,B,C,D,E,F,（1）你們不準在學校吸煙。,Yo

16、u mustnt smoke at school.,(2)現(xiàn)在已是午夜了, 你偏要這個時候彈 鋼琴嗎？,It is midnight. _?,Must you play the piano now,Translate the sentences,What sort of house do you want to have? Something big? -Well, it _ be bigthats not important. A. mustnt B. neednt C. cant D. wont 2. 改錯 Mr. Li mustnt have gone to Shanghai becau

17、se I saw him a few minutes ago.,B,cant,Do the following exercises,1. The ground is rather wet, so it _have rained last night, didnt it? 2. I really regretted wasting the hours when I _have studied hard, but it was too late.,must,should,Fill in the blanks,Multiple choices,1. -Did the train arrive in time? -No. It _ two hours ago. A. must have arrived B. ought to have arrived C. must arrive D. ought to arrive 2. Must I drive to his house and pick up the children? No, . A. you shouldntB. you