【正文】 You needn39。s only six．你其實不必叫醒她。注意：did not need to do 動作并沒發(fā)生（沒做）例：I didn’t need to get up early, so I got up until 9 .*八大注意點　, might 表示征詢對方意見或表示請求時，回答應相應使用can, may— Might I watch TV after supper? — Yes, you ________. A. may B. must C. might D. can2. May I / we …？這一類疑問句的肯定回答為Yes, ；否定回答為Please don’, you mustn’t. 例如：“May we leave now?” “No, you mustn’t. You haven’t finished your home work yet.” 3. need I / we …？這一類疑問句的肯定回答為Yes, we must。 如果是否定的答復，不能用mustn’t，而要用needn’t或don’t have to5. I wish to go home with you, may I?6. Do help yourself to have fruit, won’t you/ will you? （表示一種委婉的請求） 用于第三人稱，表示許可，允許Let’s do this job, shall we? Let us do this job, will you?8. should 也表示驚訝的語氣，例如：I was shocked that she should have said such a thing to you.(她竟然對你說那樣的話,…) *四大特殊結(jié)構(gòu)+ 動詞原形”意為“最好，滿可以，倒不如”，相當于had betterYou may as well do it at once. well + 動詞原形”是一種常見的結(jié)構(gòu)，意為“（完全）能，很可能” He may well be proud of his son. 他大可為兒子高興。can / could 只能表示現(xiàn)在或過去的能力*was / were able to : “設法做成某事” ，相當于managed to do sth；succeeded in doing sth.二、used to 和would 的區(qū)別used to過去常常（但現(xiàn)在已無此習慣，would無此含義） He used to drink beer, now he drinks ，現(xiàn)在喝白酒。We used to live in a small town.（不能用would）Be used to doing sth: 習慣于做某事真題速練1. You _____Jim anything about. It was none of his business. 2000a. needn‘t have told b. needn’t tell c. mustn’t have told d. mustn’t tell 2. He ______unwisely, but he was at least trying to do something helpful. 1999a. may have acted b. must have acted c. should act d. would act 3. Mush as______, I couldn’t lend him the money because I simply didn’t have that much spare cash. 1999a. I would have liked to b. I would like to have c. I should have to like d. I should have liked to 4. You ______Mark anything. It was none of his business. 1998a. needn’t have told b. needn’t tell c. mustn’t have told d. mustn’t tell 5. As it turned out to be a small house party, we _____so formally. 1996a. need not have dressed up b. must not have dressed upc. did not need to dress up d. must not dress up 6. The meeting’s been cancelled. Ann _____ all that work. 1995a. need to do b. need have c. needn’t have done d. needed not to do 7. “She must be in the dormitory now.” “No, she ____ be there. I saw her in the classroom a minute ago.” 1994a. mustn’t b. can’t c. couldn’t d. wouldn’t 8. He _____ the 8:20 bus because he didn’t leave home till 8:25. 1994a. couldn’t have caught b. ought to have caught c. shouldn’t have caught d. must not have caught 15