【正文】 by bus. A. don’t need B. needn’t to C. don’t need to D. need don’t to【解析】由選項(xiàng)A 可知 need 為實(shí)義動(dòng)詞， 故應(yīng)加上to 才正確。A knife can be used for cutting things.(刀可以用來割東西)/ A knife can be used to cut things.(刀可以用來割東西)【情態(tài)動(dòng)詞例題解析】—________ you pass me a pen? I’d like to write down the phone number. —Sure. Here it is.A. Can B. Need C. Might D. Must【解析】 由題干可知，本句表示請(qǐng)求、許可。She is used to eating 。易混點(diǎn)六: used to do / be used to doing / be used to do…/ be used for doing sthused to do 表示過去常常發(fā)生的動(dòng)作， 強(qiáng)調(diào)過去，只用于過去，注意用 to do，不用doing形式；而be used to doing 意為“習(xí)慣做…”， be 可有各種時(shí)態(tài)； be used to do 意為“……被使用去做……,” 為被動(dòng)語態(tài)形式。2. have to可以用于多種時(shí)態(tài)；而must只用于一般現(xiàn)在或?qū)怼 haven’t got any money with me, so I’ll have to borrow some from my ，只好向朋友借點(diǎn)了。如：I know I must study ?！　∫谆禳c(diǎn)五：must 和 have to 側(cè)重于個(gè)人意志和主觀上的必要。2. mustn’t 意為“ 禁止、不許”， 用來表達(dá)命令，表示強(qiáng)烈的語氣。（3）否定句中表示推測(cè)。（2）不能。易混點(diǎn)四：can’t 和 mustn’t1. can’t 根據(jù)其基本用法可譯為：（1）不會(huì)。Where can they be now? 他們現(xiàn)在可能在哪兒？That can’t be true. 那不可能是真的。如：Can/ May I help you ? 我能幫助你嗎？　2. can 和may 表示可能性時(shí)的區(qū)別：1)在肯定句中用 might，may，must，不用can2)在疑問句中表示推測(cè)用can，不用 might，may，must3) 在否定句中用can’t（不可能）， 不用 may， must。We were able to reach the top of the mountain at 。He has been able to drive. 他已經(jīng)會(huì)開車了。He could speak English at 5. 他五歲時(shí) 就會(huì)說英語。另外 be able to 常常指經(jīng)過努力，花費(fèi)了時(shí)間和勞力之后才能做到某事。如：You could have stayed with the Smiths while you were in New York (but in fact you stayed in a nearby hotel .) Could Mr Li have helped this girl student?“may/might+完成式”表示“過去可能，本來可以于某事而實(shí)際上沒有干”，might的可能性較小，語氣較弱。如：I saw him just now. He can’t have gone to Japan.She said the man couldn’t have stolen her car.“could+have done/been”表示“過去本來能夠，可以做某事或成為某種狀態(tài)，而實(shí)際上沒有”，說話者有些遺憾。如：You should have finished your homework earlier (but in fact you did not finish it on time).You shouldn’t have gone to bed when you woke up at five (but in fact you went to bed again then).“needn’t+完成式”表示“本來沒有必要做某事，而實(shí)際上卻做了”。如：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)“should +have done /been”表示“本應(yīng)當(dāng)做某事，而實(shí)際上并沒有做”；“ shouldn’t+完成式”表示“本來不應(yīng)當(dāng)做，而實(shí)際上卻做了”。如：It is already 10 o’clock now they should be there.二、情態(tài)動(dòng)詞表示對(duì)過去可能發(fā)生的動(dòng)作或存在過的動(dòng)作的推測(cè)性用法。如：The man may be the headmaster.—Where is Mr Li? —He might be working in his office. —May Mr Li e? —He might not e here.Could表示推測(cè)時(shí)，語氣can比要弱，說話者留有余地。 如：That man can＇t be her husbandshe is still single.Who is knocking at the door?　Can it be the postman?must表示肯定的推測(cè)，一般用于肯定句中?？键c(diǎn)五: 情態(tài)動(dòng)詞表示推測(cè)的用法:一、“情態(tài)動(dòng)詞+動(dòng)詞原形”表示對(duì)現(xiàn)在的推測(cè)。More and more trees must be planted in 。如：You needn’t get up so early every ?？键c(diǎn)四: 情態(tài)動(dòng)詞的被動(dòng)語態(tài)含有情態(tài)動(dòng)詞的被動(dòng)語態(tài)的結(jié)構(gòu)為： 情態(tài)動(dòng)詞+ be + done (動(dòng)詞的過去分詞)。5. shouldn’t 表示不應(yīng)該。（2）needn’t + have+ 動(dòng)詞的過去分詞，表不需要完成但已完成的動(dòng)作，暗含時(shí)間或精力上的浪費(fèi)。4.（1）needn’t 意為“ 不必”?！?2) mustn’t 也可用于以 may 表示要求時(shí)的否定回答中。 如：He mustn’t leave his room. 他不許離開他的房間。2. may的否定式為 may not，譯成“ 可能不”，如：He may not be at home. 他也許不在家。can’t help doing 禁不住，…情不自禁… can’t wait to do sth 迫不及待… 如：She can’t help crying. 她不禁大哭起來。 如：May I e in ? 我可以進(jìn)來嗎？No, you mustn’t. / can’t. 不，你不能。（2）當(dāng)句子表推測(cè)時(shí)，用can’t 表達(dá)不可能， 如：He can’t be ill. He is playing chess with Tom. 他不可能病了，他正和Tom 下棋呢。其回答方式有以下幾種： Yes, please.　All right.　No, thank you. you…的回答方式有以下幾種：Yes, I will. (No, I won’t.)　Sure . (I’m sorry , I can’t.)　All right/ OK/ With pleasure.　Certainly. (No, thank you .)　Yes, please.【例題】—Would you do me a favour and pass on my thanks to Lily? —________.　’s right pleasure doesn’t matter trouble【解析】A. “對(duì)了” ，B. “ 樂意效勞”, C. “ 沒關(guān)系” D. “不費(fèi)事”。如:Could you do me a favour? 你能幫我個(gè)忙嗎？—Could I use your pen? 我能用一下你的鋼筆嗎? —Yes, you 。You had better not give the book to 。ll stay with you and help you 10. had better 的用法：had better “最好”，沒有人稱和數(shù)的變化，后面接動(dòng)詞原形，其否定形式為：had better not do。（一定不能說there will have）例如： There are many students in our school. →There will be many students in our school. There will be a sports meeting next week. 一定不能說：There will have a sports meeting next week.will 與be going to do sth區(qū)別：①. be going