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t可譯為“不會”,I can’t play 。3.(1)mustn’t表示不許,不可?!ou needn’t have bought (但你卻買了)。Many of the stars can not be seen because they are far away from us.很多星星我們都看不到,因為它們離我們太遠(yuǎn)了?!癿ust +have done/been”表示“過去一定發(fā)生過某事或存在過某種狀態(tài)”,不用于“musn’t+have”形式。如:He may have finished reading the book. She might have given you some help,however bus she was.【情態(tài)動詞易混點歸納】易混點一: can和be able to:兩者表示能力時用法相同,但can只有原形“can”和過去式“could”兩種形式,在其他時態(tài)中要用be able to來表示。易混點二:can和may1. can和may均可用來征求意見或許可,意為“可以”,一般可互換使用。如:We can’t do it now because it’s too dark. 天太黑了,我們現(xiàn)在干不了。My brother was very ill, so I had to call the doctor in the midnight.我弟弟病得厲害,我只得半夜里把醫(yī)生請來。He wasn’t used to eating in a 。如:The position is due to hand in this morning, so I had to finish it last night.作文今天早晨到期,因此我不得不昨天晚上完成。如:You mustn’t play football in the street. It’s too dangerous.你不可以在街上踢足球,太危險了。易混點三: may be和maybe 用法區(qū)別 常用位置may be may為情態(tài)動詞,be為動詞原形 句中,作謂語maybe 副詞,大概、也許,相當(dāng)于perhaps 句首,作狀語例如:He may be wrong , but I’m not sure. 也許他錯了,但我也不確定。We’ll be able to see him next 。There was plenty of time. She needn't have hurried .“can’t /couldn’t+have done /been”表示“過去不可能發(fā)生了某事或存在過某種狀態(tài)”。He must be in his office now. Mr Li must be working now,for the lights in his office are still on.might表示推測時不一定是may的過去時,只是表示其可能性較小。做題時要兼顧情態(tài)動詞和被動語態(tài)這兩個方面。—May I stand here? 我可以站在這里嗎?—No, you mustn’t (can’t).不,不行。(4)can’t還可用于固定習(xí)語中??键c二:含有情態(tài)動詞的疑問句的回答:1. 對may引出的問句,可以有下列回答方式:Yes, you may. | 、 Yes, of course. 、 Yes, certainly. 、 Sure . No, you mustn’t. 、 No, you can’t.,回答方式為:Yes, …must. 、 No,… needn’t/ don’t have to.,表示委婉的語氣,此時could沒有過去式的意思。I will help you if I’m free this ,我就會幫你。t we stay here another day?(4).用“Would you like...?”來提出建議,意思是“你想要……嗎?”Would you like后可接名詞或不定式。(1).用“Let39。.The door needs painting. = The door needs to be 。She must have seen the film before,hasn’t she? (注意反意疑問句的后半部分)You must have met uncle Wang in the shop yesterday,didn’t you? (注意反意疑問句的后半部分)5. need的用法:(1).need表示需要、必須,主要用于否定句和疑問句中,其否定形式為needn’t,意為“沒有必要,不必”。May you be happy!祝你幸福!May you succeed!祝你成功!4. must的用法: