高中英語必修三 (課件)Unit 5 The Value of Money Discovering Useful Structures

1、Unit 5 The Value of MoneyDiscovering Useful Structures1（教材P52）Oliver believes that with a millionpound bank note a man could live a month in London. ()2（教材P52）Young man, would you step inside a moment, please? ()3（教材P52）May we ask what youre doing in this country and what your plans are? ()4（教材P52）W

2、ell, I cant say that I have any plans. ()A E E A 5（教材P52）Well, you mustnt worry about that. ()6（教材P52）You mustnt think we dont care about you. ()7（教材P52）Well, it may seem lucky to you but not to me! ()8（教材P52）Now if youll excuse me, I ought to be on my way. ()9（教材P52）Oh, no, youd better not open it.

3、 ()B B D F C 一、情態(tài)動詞的基本用法（一）can/could的用法1表示能力，意為“能，會”。Many people can use the computer.許多人會用電腦。No one could answer this challenging question.沒人能回答這個具有挑戰(zhàn)性的問題。2表示客觀或理論上的可能性。It can be very hot here in summer.這里夏天有時會很熱。Accidents can happen to any drunken driver.醉酒的司機都有可能發(fā)生交通事故。3表示請求或允許。在疑問句中could可以代替can，

4、語氣更委婉。Could I have a word with you? It wont take long.我可以和你談?wù)剢?？不會花很多時間的。4表示推測，意為“可能”，用于否定句和疑問句。can比could語氣強。He cant be our manager. He has gone to Beijing.他不可能是我們經(jīng)理。我們經(jīng)理已經(jīng)去北京了。He cant have left. His coat is here.他不可能已經(jīng)走了。他的外套還在這里。（二）may/might的用法1表示請求和許可。在疑問句中might可以代替may，語氣更加委婉。Might I ask for a pic

5、ture of your little daughter?Yes, you may.我可以要一張你小女兒的照片嗎？是的，可以。2表示推測，意為“或許，可能”，通常用于肯定句和否定句。might比may語氣弱。I dont really like James. Why did you invite him?Dont worry. He might not come. He said he wasnt certain what his plans were.我真的不喜歡詹姆斯。為什么你邀請他？別擔心，他或許不會來。他說他還不能確定他的計劃。3表示祝愿，常用結(jié)構(gòu)為“May主語動詞原形！”May yo

6、u be happy every day!愿你快樂每一天?。ㄈ﹎ust的用法1表示“必須”，語氣強烈。have to表示“不得不”，意義與must相近，但又有所區(qū)別。must表示說話人的主觀看法，have to則強調(diào)客觀需要；must只有一種形式，而have to有人稱、時態(tài)等方面的變化。Shall I inform him of the change of the schedule right now?I am afraid you must, in case he comes late for the meeting.我該馬上通知他日程改了嗎？我想你必須（通知他），以免他開會遲到。I h

7、ave to go now, because my mother is in hospital.我現(xiàn)在不得不走了，因為我母親在住院。2表示推測，意為“一定”，用于肯定句。Someone must have used my umbrella yesterday. I found it wet.昨天一定有人用了我的雨傘，我發(fā)現(xiàn)它濕了。3意為“偏要，非要不可”。If you must go, at least wait until the storm is over.如果你非要走，至少要等到暴風(fēng)雨停止。4mustnt表示禁止，意為“不得，不允許；一定不要”。That car is my proper

8、ty; you mustnt use it without my permission.那輛車是我的財產(chǎn)，你必須得到我的允許才能使用。（四）shall的用法1用于第一、三人稱疑問句中，表示說話人征求對方的意見。Shall we put off the sports meet till next month?我們能否將運動會推遲到下個月？Shall Tom go there with me tomorrow?明天湯姆可以和我一起去那里嗎？2用于第二、三人稱陳述句中，表示說話人的命令、警告、威脅、允諾、決心等；或用于條約、規(guī)定、法令、法律等，意為“必須”。You shall be punished

9、 for what you have done.你必須為你的所作所為受到懲罰。（五）should/ought to的用法1should表示責任、義務(wù)、勸告、建議等，意為“應(yīng)該”。We should be strict with ourselves.我們對自己應(yīng)該嚴格要求。2should表示出乎意料的口氣，意為“竟然，居然”。Such a gentleman should do that.這樣一位紳士竟然會做那種事。3ought to表示義務(wù)或責任，意為“應(yīng)該”，語氣比should稍重。You ought not to be late for such an important meeting.

10、這么重要的會議你不應(yīng)該遲到的。4should和ought to表示推測，指預(yù)期的可能性，意為“應(yīng)該，估計”。She promised to come by 10 oclock. She should/ought to be here at any moment.她答應(yīng)10點之前來的。她隨時都可能來到。（六）will/would的用法1表示意愿、意志、決心。will指現(xiàn)在，would指過去。I will never talk to him again.我再也不愿意和他說話了。Why didnt you come to Simons party last night?I wanted to, bu

11、t my mom simply would not let me out so late at night.為什么你昨天晚上沒來參加西蒙的聚會？我想去參加，但只是我媽媽不愿意讓我那么晚出去。2表示征求意見或提出請求，多用于第二人稱疑問句中。would比will語氣委婉。Would you mind opening the window for me?請你給我打開窗戶好嗎？3表示習(xí)慣性動作、固有屬性、必然趨勢，意為“總是，習(xí)慣于”。will指現(xiàn)在，would指過去。Every morning he will always have a walk along this river.每天早晨，他總會

12、沿著小河散步。Mum would tell us stories before we went to bed.過去在我們上床睡覺前，媽媽總給我們講故事。4表示功能，意為“能，可以”，常用于否定句。The door wont open.這門打不開。（七）need的用法作情態(tài)動詞時，need沒有人稱和時態(tài)的變化，后接動詞原形，一般用于否定句或疑問句中。其否定形式是在其后直接加not，疑問形式是直接將need提到主語前。由need構(gòu)成的一般疑問句，其肯定回答用must。You neednt be told twice about one single thing.同一件事不必對你說兩遍。Need I

13、 tell him everything thats happened to his parents?Yes, you must./No, you neednt.我有必要告訴他有關(guān)他父母發(fā)生的一切嗎？是的，必須。/不，沒必要。名師點津need還可以作實義動詞，此時有人稱和數(shù)的變化，后面可跟名詞、帶to的不定式或動名詞等作賓語，其否定形式、疑問形式都要通過助動詞do構(gòu)成。 Plants need light in order to survive.植物存活必須有光照。Do I need to leave my telephone number and address?我有必要把電話號碼和地址留下

14、嗎？You dont need to hand in your compositions today.你們今天不必交作文。（八）dare的用法1dare可用實義動詞和情態(tài)動詞，用作情態(tài)動詞時，意思是“敢”，其后接動詞原形，通常只用于否定句或疑問句以及if或whether之后，一般不用于肯定句：Dare you tell her the truth?你敢告訴她事實真相嗎？ I dont know whether he dare try.我不知他是否敢試一試。I darent ask her for a rise.我不敢要求她加薪。名師點津I dare say 是習(xí)慣說法（用于肯定句），并不一定要

15、譯為“我敢說”，它所表示的是一種不肯定的語氣，常譯為“很可能”“大概”“我想”等，有時用作反語：I dare say (that) you are right.我想你是對的。Oh, you mean to win? I dare say you will.啊，你想打贏？ 我且看你贏吧。2dare用作實義動詞時意為“敢于”，可以有各種詞形變化，可用于各類句型（肯定句、否定句、疑問句及各類從句等），其后多接帶 to 的不定式，有時 to 也可省去（尤其是在否定句或疑問句中），可用于非謂語形式、完成時態(tài)等：We must dare to think, speak and act.我們必須敢想、敢說、

16、敢做。I wonder how he dared (to) say such things.我納悶他怎么竟敢說出這樣的話來。Did he dare (to) tell her?他敢告訴她嗎？ We dont dare (to) say anything.我們什么也不敢說。The boy stood before the teacher, not daring to look up.這個小男孩站在老師面前不敢抬頭。Ive never dared (to) ask her.我從來不敢問她。二、“情態(tài)動詞have done”的用法情態(tài)動詞have done用法must have done一定做過某事

17、，其否定形式為cant/couldnt have donecan have done表示對過去某種情況的懷疑或不確定，一般用于否定句和疑問句，could的語氣較can弱could have done1.本來能夠做某事但卻未做2.可能做過某事cant/couldnt have done不可能做過某事may/might have done或許/可能做過某事should/ought to have done本該做但卻未做，其否定形式表示本不該做但卻做了neednt have done做了本沒有必要做的事情He is so happy. He must have won the match.他這么高興

18、，他一定贏了這次比賽。She couldnt have read about the explosion. She didnt know anything about it.她不可能讀過關(guān)于爆炸的消息，她對此一點也不知道。You could have done better, but you were too careless.你本來能做得更好些，但你當時太粗心了。She may have bought the dictionary, but Im not sure.她可能買了那本詞典，但我不太確信。Sorry, Im late. I might have turned off the ala

19、rm clock and gone back to sleep again.對不起，我遲到了。我可能把鬧鐘關(guān)掉后又睡著了。Look! There are so many mistakes in your composition. You should have fixed full attention on it.看！ 你的作文里有這么多的錯誤。你本應(yīng)該把所有的注意力都集中在它上面的。We neednt have bought so much food now that Suzie wont be with us for dinner.既然蘇西不與我們一起吃晚飯，我們原本不必買那么多食物。.用

20、情態(tài)動詞或其否定形式填空1Sometimes smiles around the world _ be false, hiding other feelings like anger, fear or worry.2You _ have taken so much cash with you, you knowthat shop accepted checks.3According to the factory safety rules, all accidents _ be reported to the safety officer.canneedntshall4School is ove

21、r. How can we contact Robert?Try phoning him. He _ be home by now. He lives only a stones throw from the school.5Thank you for inviting us. Tell your wife that she gave us a perfect party.I _. See you later.6She _ have attended that meeting, for she was doing paperwork in the office then.7The fire w

22、as so big that it was several hours before firefighters _ get it under control.shouldwillcouldntcould8You talk so much about London. You _ have been there.Yeah, I went sightseeing on a tour last summer.9What a slow bus this is!Yes, we _ just as well walk.10When she was a little girl, she _ sit by th

23、e window every evening, deep in thought.mustmay/mightwould.單句語法填空1Cant you stay a little longer?Its getting late. I really _ go now. My daughter is home alone.2.Sorry, Mum! I failed the job interview again.Oh, its too bad. You _ (make) full preparations.3You _ feel all the training a waste of time,

24、but Im a hundred percent sure later youll be grateful for what you did.mustshould have mademay4You _ be Carol. You havent changed a bit after all these years.5Life is unpredictable; even the poorest _ become the richest.6I still remember my happy childhood when my mother _ take me to Disneyland at w

25、eekends.7It was sad to me that they, so poor themselves, _ bring me food.8Harry is feeling uncomfortable. He _ (drink) too much at the party last night.mustmightwouldshouldmust have drunk情態(tài)動詞和過去將來時二、過去將來時翻譯下面含有過去將來時的句子1（教材P52）Yes, I was about to go get the letter._2They would leave for Paris the nex

26、t morning._3I was going to help Mary with her Chinese that evening._是的，我正要去拿信。 第二天早上他們將動身去巴黎。 那天晚上我正打算幫瑪麗學(xué)中文。 1過去將來時的基本構(gòu)成和用法過去將來時由“would動詞原形”構(gòu)成，主要表示從過去某一時間來看將要發(fā)生的動作（尤其用于賓語從句中），還可以表示過去的動作習(xí)慣或傾向。She said that she wouldnt do that again.她說她再也不會這樣做了。2過去將來時的其他表達法（1） was/were going to動詞原形：該結(jié)構(gòu)有兩個主要用法，一是表示過去的打算；二是表示在過去看來有跡象表明將要發(fā)生某事。I thought it was going to rain.我認為要下雨了。（2）was/were to 動詞原形：主要表示過去按計劃或安排要做的事情。She said she was to get married next month.她說她計劃在下個月結(jié)婚。（3）was/were about to 動詞原形：表示在過去看來即將要發(fā)生的動作，由于本身已含有“即將”的意味，所以不再與表示具體的將來時間狀語連用。I was about