情態(tài)動詞詳細整合講解及練習

1、模態(tài)動詞(a)、modal verbs、Grammar、模態(tài)動詞、猜測表示、不表示猜測、can could may might shall should must will would ought to、Han僅用作情態(tài)動詞的can/could、may/might to、must的情態(tài)need、Dare/dared moduld動詞的shall/should、will/would是情態(tài)動詞的hall/wouldE.g .這臺電腦肯定有問題。there must be something wrong with the computer。努力學習了一整天，應該很累吧you have worked

2、hard all day。you must be tired。must、can/could、may/might的用法，注意：must在肯定的句子中可能表示“happing”。Natural lly，after I told her what to do，my daughter must go and do the opposite。當然，我讓女兒做什么后，她偏偏要做相反的事。2.must be doing/do說他對現(xiàn)在的動作做了明確的推測，e.g .他現(xiàn)在一定在看小說。He must be reading novels now .他們買了一輛新車。他們一定很富裕。they have boug

3、ht a new car。they must have a lot of money .3 .must have done對過去發(fā)生的事情表示了肯定的判斷。e.g .他們在打籃球，他們可能完成了作業(yè)。they are playing baskeball，they must have finished their home work。路濕了。昨晚一定下雨了。the road is wet . it must have rained last night。對當前或未來情況的推測：must動詞原型。Must只能用于肯定。否定和疑問分別使用cant和can。E.g. he must tell a li

4、e。can he tell a lie？He cant tell a lie .* must-should/ought tomay-might/could do可能性依次減弱，(對過去情況的推測：must may，might)完成時。e . g . you must have met him before . must-may-might可能性依次弱化must只能在正句子中使用，并翻譯為“常數(shù)”。否定和疑問分別使用cant/couldnt和can/could。e . g . could/can it have happened last night？it could n t/can t hav

5、e happened last night。he must be reading，isnt he？You must do it yourself，dont you？He must have gone over the article，hasont he？It must have rained last night，didnt it？表猜測語句的反義語句的構成，can，could和be able to sing the song in English。this machine是make you feel comfortable，1 .can、“能力”、can的主題是人或事物，be able to

6、的主題是人、Can、could和be able to的使用，e . g . we ll be able to finish the work soon。I havent been able to see the film，2 .can僅適用于當前和歷史?？捎糜诙喾N時態(tài)。Could用于表示能力，意味著過去。E.g. I could read when I was four。although the soldier was badly wounded，he was able to tell whathad happened。3 .在表示特定過去能力之一或表示已成功完成某項工作時，只能使用was/w

7、ere able to，不能使用could。e . g . he was able to escape from Europe before the war broke out。he was able to swim before he got tired。表示過去的能力，can/could，1。can /could在表示猜測時只能用于否定句或疑問句。E.g. Its so late。Can Tom be reading？It be格林先生？這個人不可能是瑪麗。她病了。It cant be Mary。She has fallen ill。她不可能在說謊。She couldnt be telli

8、ng lies。在疑問句中，could比can更有禮貌，這里不是can的過去時態(tài)。E.g. Can you wait a moment please？莉斯，can you do me a favor？Exuse me，could you tell me the way to the station？I wonder if you could help me。(請求)，2 .can/could have done對過去行動發(fā)生可能性的推測是：他出國是不可能的，因為剛才我還看到他了。I saw him just now so he could n t have gone abroad。門被鎖上了，

9、她不可能在家。，the door was locked，she couldnt have been at home。3 .can/could have done 可能只是在表示對過去事情的判斷的肯定句子中使用了，所以e.g .可以測試得更好。you could have had a better mark，may/might，1 .may/might只能用于表示猜測時對當前或將來發(fā)生的行為不太了解的陳述。E.g .他們明天可以來這里。They may come here tomorrow。他們可能還在等我們。they may be still waiting for us。2 .might可以

10、指過去的行為，也可以指可能性較小的行為。E.g .他可能在做作業(yè)。He might be doing his homework now。問他我能否離開。I asked him if I might leave。I asked him may I leave now？3.might/may have done，表示對過去發(fā)生的事情的可能性的推測。E.g .他可能去了醫(yī)務室。He may have gone to the clinic。他可能已經(jīng)從報紙上知道那個消息了。he might have read about the news in the new paper。4) may表示允許別人做某

11、事，并征求對方的允許。May I open the door？We may keep the book for two weeks。5)用于命令型，表示祝愿。May you succeed！May you have a nice trip！估計情態(tài)動詞的重要用法。積極的可推測的推測消極的推測疑惑，must，對未來的當前過去，模態(tài)動詞，may，might，cant，couldnt，can，could，V. Vv.v.have done be doing，v.v. have done be doing，will/would you do.(表請求would更委婉)表意、愿望、決定would表過去重

12、復的行為或某種傾向“總是，總是”used to table過去經(jīng)常(現(xiàn)在沒有這樣的習慣)“used to”可以和狀態(tài)動詞一起使用。()he would be a quiet boy。()，-300；will/would，shall/should，1。shall在第二至第三人稱陳述中表示說話者給對方的命令、警告、承諾或威脅。E.g.1)You shall go with me。(命令)2)you shall have the book when I finish it(承諾)3)He shall be punished(威脅)2。shall用于第1，3人稱疑問句中，說話者征求對方的意見，詢問對方

13、。E.g.4)Shall we begin our class？(征求意見)5)when shall Mike be able to leave hospital？(報告)3。用于條約、規(guī)章、規(guī)則及其他文件，表示更多用于第三人稱的一種義務。(6) the interest _ _ _ be divided into five parts，according to the agreement made by both sides . “declared the judge . a . may b . should c . must d . shall，用于表達合理的推理。E.g. it is t

14、hree oclock，the footlball game should begin now . Mary took dancing lessons for years，should be an excellent dancer使用should，2 .使用should，注意：should說：“實際上，實際上。E.g .我不能相信這樣的紳士居然對老人無禮。I can t believe such a gentleman should be so rude to the old .e . g . young people should learn how to use computers。eve

15、ry citizen ought to obey law。you ought not to go。3 .should常說建議、建議、命令等于ought to，但ought to表示更多的責任、義務和語氣。疑問句中總是用should代替ought to。，e . g . you should/ought to have told her the truth earrier。she should n t have left without saying a word .4 .“should/ought to have done”表示譴責或批評，并表示“應該但沒有”意思是否定的，不能做.但是，“ou

16、ght to的語氣更強烈，must和have to，1.must在一般問題中必須與must否定一起使用neednt或dont have to，“不需要”，mustnt表示“禁止，不允許”，-yes，you must.no，you need nt。you mustn t get off while the car is still moving。E.g. I dont like this TV set。we must buy a new one。there was no more bus。they had to walk home。2 .表示“一定”的意思時，must和have to有點不同。Must強調主觀意見，have to強調客觀要求。have to還可以用于更多時態(tài)。need /dare a. need表在否定句和疑問句中需要和必須使用很多。不需要 neednt have done . B. dare表敢，常用于否定句、疑問句、條件語句。C.