初中情态动词用法小结

1、T,Please finish the following exersices,1.You _ to go and see the doctor right now.(2006湖南) must B. should C. have D. Will 2. _ I ask your name, please? A. Will B. Shall C. May D. Must 3.“Can you sing the song in English?”“No, I _.” A. may not B. mustnt C. neednt D. cant 4.You _ do it even if you do

2、nt want to. A. cant B. mustnt C. have to D. neednt 5.Its a fine day today. You _ take a raincoat with you. A. mustnt B. dont need C. neednt D. cant 6.The traffic _ stop when the lights are red in the street. cant B. dont have to C. mustnt D. Must 7.Must I return the book this morning? -No, you _. Bu

3、t you _ return it before supper. neednt; must B. mustnt; can C. mustnt; may D. cant; need,C C D C C D A,初中情态动词用法小结,1.We _能 use the computer now, but we _不能 two month ago.,表达“能力”。,2.You _能 go now. She _不能 stay here.,表示“许可”,3._能 you help me with my Enlish? _能 I have some water?,有礼帽地提出“请求”。 （用于疑问句）,Cou

4、ld you tell me_? A.Where does she live B. Where she lives C. Where did she live D.Where she lived,Would you tell me_?,4.He _不可能 be the manager, for I saw him go to Canada yesterday.,谈论“可能性”,用否定形式,can,此处为一般时,B,B,cant,We shall _能 finish the work next week.,I havent _能 find any jobs.,be able to 可取代 can

5、，要注意的是：be able to 可以表达更多的时态 。,No one is able to do it. ( = No one can do it.),注意,1. You _可以 go home now.,表示“允许”,He said that I _可以 drink some beer.,2._可以 I watch TV this evening? - _可以 I use you pen? - Yes, you _. No, you _.,No, you _.,请求“许可”（用于疑问句） 注意否定回答,3.If you are not careful in the street, a c

6、ar _ hit you. A. can B. may C. would D . must,谈论“可能性”,He isnt in the school. I think he _ be ill.(2006广东) A. can B. shall C. might,may= might=could 表示“可能” 为一般时态，只用肯定形式。,They_可能 leave the hospital .,may,may,might,May,May,may,cant,mustnt,B,C,1. Everybody_必须 obey the rules. I _必须 go now. This work _必须

7、be finished as soon as possible.,2.You _不准 lend the book to others.,表示“必要性”,3.Children _ play on the road or in the street. It is dangerous. A. may not B. mustnt C. couldnt D. neednt,mustnt 表示“（说话人）禁止，不准”； 用来代替 may not 表示“不许可”。,4.Even the top students in our class cant work out this problem, so it _

8、be very difficult.(2005上海) A. may B. must C. can D. need,进行“肯定的推断” 可能性较大译为“一定”,must,must,must,must,mustnt,B,B,5.It was dark. We _必须 go home. Her mother is ill.so she _必须 stay at home and look after her.,The students of today will _必须 learn how to use the computers.,表示“客观需要”时，用 have to 而不用 must。 另外ha

9、ve to 在句中可以有更多的时态。must 只有一般和过去时,6.-Must I return the book tomorrow? -yes,_ . No,_.,No,_.,neednt=dont have to 不必,must,have to,has to,have to,you must,you neednt,you dont have to,1You _do it again你不需要再做了。 A. dont need B. neednt,2._需要he do this homework first？他需要先做这些作业吗？,3.He _需要to buy a new bike.,作为情态

10、动词的“need”通常用于 否定句和疑问句。“need”作为实义动词时， 后接名词或动词不定式,4.Kate said she _需要 some help .,-_需要he do this homework first？,-Yes，he_ No, he _,need,B,Need,needs,needed,Need,must,neednt dont have to,should,应该、应当,They should arrive at noon. 她们应该在中午到达 The classroom should be cleaned up .,情态动词一般无人称和数的变化, 情态动词后面跟的动词需用

11、原形,否定式构成是在情态动词后面加 “not”。 We cant carry the heavy box. 我们搬不动那箱子。,情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语, 只能和其他动词原形构成谓语。 We can be there on time tomorrow. 我们明天能按时去那儿。 May I have your name? 我能知道你的名字吗？,记住了吗？,巩固练习,( ) 1 John_ come to see us tonight, but he isnt very sure yet. A. may B. can C. has to

12、D. must ( ) 2 They _ do well in the exam. A. can be able to B. be able to C. can able to D. are able to ( ) 3 -May I take this book out? -No, you_. A. cant B. may not C. neednt D. arent ( ) 4 You_ go and see a doctor at once because youre got a fever. A. can B. must C. dare D. would ( ) 5 -Can you s

13、peak Japanese? -No, I_. A. mustnt B. cant C. neednt D. may not,A D A B B,( ) 1 -He_ be in the classroom, I think. -No, he _ be in the classroom. I saw him go home a minute ago. A. can; may not B. must; may not C. may; cant D. may; mustnt ( ) 2 -Shall I get one more cake for you, Dad? -Thanks, but you_, Ive had enough. A. may not B. must not C. cant D. neednt ( ) 3 The poor man needs our help, _ he? need B. neednt C. does D. doesnt ( ) 4 You_ worry about