Unit8__情态动词表推测精讲练

1、Unit8 情态动词表推测精讲练一定；准是”的意一定”。“ must be现在分1.must表示说话人对事物的推测的可能性的程度非常大，含有 思。“ must be表语”表示对现在情况的推测，意为一定正在”。“ must +have+一疋词”表示对说话瞬间（或现在）情况的推测，意为 过去分词 ”表示对过去或已完成事情的推测，意为He must be in the office now. 他现在准在办公室。She must be cook ing now because I can smell someth ing delicious 她一定在做饭, 因为我闻到了香味。He must have

2、fini shed his homework yesterday.他昨天肯定完成了作业。2.may表示推测，语气没有 must强，意为 也许；或许” may not意为 也许不”。 might 是 may 的过去式，表示说话人对现在或将来不太确定的可能性的推测。Excuse me. Could you tell me the way to the library?青问，你能告诉我去图书馆 的路吗？ Ask the policeman. He may know. 问问那个警察吧，他可能知道。She is coming to us. She might be our new teacher她正朝我

3、们走来，她可能是我们 的新老师。3.can表示推测时，常用于否定句或疑问句中，can意为 不可能” “can/can t+表语”表示对现在情况的推测，意为“（不）可能”。could是can的过去式，表示说话人对事物 的推测，可能性比 can 小，语气较委婉。Listen. Carol is singing in the next room. 听，卡罗尔正在隔壁唱歌。It s can t be her. She has gone to B不j可能是她，她去北京了。It could rain tomorrow, but there is no cloud in the sky today. 明天可

4、能会下雨， 但今 天天上没有一点云彩。典例题解I m not sure. He例 1Whats Tom going to do next Sunday?A. cango to tchoeuntry to see his uncle.B. must C. willD. may1解析D。 can意为能,会” must是一定” will意为将,会” may意为可能”根据I m not sur可知道选D。 C项与I m not sur矛盾。K例 2 一Whose magazine is this?-ItA. might beCarol s. It has name on it.B. cant be C

5、. could be D. must be示不太肯定,B表示不可能”。由It has her name on it可知猜测是肯定的，应用 must beo A和C表K例 3-Jill looks so painful, therethe something wrong with her.-Oh dear! We d better take her to the nearest hospital at once.D. mustA. can B. should C. wouldK解析Do由Jill looks so painful确定选D，此处的must意为必定；准是”,K例4You表示我们对某事

6、确有把握，有很大可能性。be tired after work ing for eight hours without a rest.A. can B. may C. mustD. n eedK解析C。从 after working for eight hours without a rest可知是表示猜测，意为 一定是；肯定是”，故选CoK例 5-Are you going to Beijing by plane?-It s fast ,but expensive. So I am not sure. Itake a train.A. shouldC. mustD. willB. may1解

7、析Bo由So I am not sure可知说话者表示 可能”的意思，故选B o语法精练I.选择填空。1.一 Excuse me is this the right way to No. 1 Middle School?be.Sorry， rm not sure. But itA. can B. n eed C. must D. may2. Liste n! Is that Kate p layi ng the piano in the room?No. It be Kate. She has gone to London.A. may not B. needn tC. mustn t D.

8、can tt work.3. -Is your brother playing compu ter games, Ted?-Hedo that because the compu ter does nA. may not B. can t C. mustn t D. needn t4. -David, is that man your head teacher?-It be him. He the tallest in our school.A. mustn t B. can t C. needn t D. won tHe should, but he5. Is Sim on coming b

9、y train?not. He likes driv ing his car.A. mayB. shallC. n eed D. must6. -Where is Mr. Smith? Have you see n him?-He be in his office.-He _ be in his office, for I left there just now.A. may, can B. can, may notC. may, mustn Dt can, don t have toII.选用适当的情态动词填空。mustn t, may, could, needn t, can t, mig

10、ht, have to, can, must1. May I come in, Mr Smith? ”Sorry, you. PI ease wait a mome nt.2.It s late. Igo home now.3. Could I have a look at the p hoto of your family, Sam?Of course you4. Would you like to go swimmi ng with me this after noon?I d love to, but II m afraiidhave a lot of work to do.5.It s

11、 dangerous. Youp lay soccer on the road.6.I sp eak to Miss Guo, p lease?Sp eak ing.7. I fill in the check-i n form right now, sir?No, you. You can compi ete it this after noon.8. Who is the man over there? Is it Mr Wang?No, itbe him. Mr Wang is much taller.9.The white pursebe Jennys or Susan s. They both