语 法 复 习 专 练-高彦赟公开课

1、语法复习专练高彦赞-、知识框架4表示说话入的态度和看法肯定形式否定形式否定简略形式can/couldshall/should/ought towill/would情态动词实义动词had bettermay/mightmust/have tomust/need/may回答和提问must/ cant表示肯否定推测need情态动词和实义动词用法的区别情态动词主要用于表示说话人的态度和看法。情态动词不能单独使用必须与动词原形一起构成谓语，其否定式是在情态动词后加否定词not。一般疑问句则将情态动词提至句首。8二、基本形式：肯定式否定式简略否定式maymay notmayntmightmight not

2、mightiVtcancan notcantcouldcould notcouldntwill, llwill not, 11 notwontwould, dwould not, d notwouldntshallshall notshantshouldshould notshouldntmustmust notmustntneedneed notneedntought toought not tooughtnt to&三、基本用法can的用法1）表能力can表能力时意味着凭体力或脑力或技术等可以无甚阻力地去做某事。I can climb （his pole.我能爬这根杆子。He is onl

3、y four , but he can read.他只有 4 岁，但已认得字了。Fire cant destroy gold.火烧不毁金子。2）表可能性多用于否定与疑问结构中，但也可用在肯定句中。Can the news be true?这消息可能是真的吗？It can be true.它不可能是真的。What can he possibly mean?他可能是什么意思?3）表示允许（和may意思相近）常见于口语。Can （May） 1 come in ?我能进来吗？Can 1 smoke here ?我可以在这里抽烟吗？could的用法1）表过去的可蹄许可，Father said I cou

4、ld swim in （he river.爸爸说我可以在河里游泳。2）表过去的能力I could swim when 1 was only six.我刚六岁就能游泳。3）表允许二可表示委婉客气的提出问题或陈述看法，不是can的过去时态。Could I use your bike?Yes, you can./No, you cant.注意:be able to表示能力,意为“能够做成某事”，相当于can的用法,但是有区别：can泛指 一般的能力；be able to则主要指成功做了某件事的能力。may （ might ）的用法1）表示请求、可以、允许。You may drive the trac

5、tor.你可以开那台拖拉机。2）当回答由may弓|起的问题时，否定答语要用must not,表示“不许可”、“不应该”、“不行May I come in? Yes, you may. No, you cant. No, you may not. No ,you mustnt3）might是may的过去式，语气比may更加委婉；must的主要用法I）表示必须、必要Wc must do everything step by st叩.我们必须按部就班地做一切事情。Why must you always bother me?为什么你偏要打扰我呢。Dmust be +表语的结构，通常表示猜测，含有“一定

6、”之意。（只用在肯定句中）He must be an honest boy.他一定是个诚实的男孩。This must be your room.这一定是你的房间。3）niust的否定式有两个：当回答由must弓|起的问题时，否定答复要用nccdn,t或don have to表示“必”、“无须”、“用 不着”、“不一定”的意义。当表示不应该”、“不许可”、“禁止时，就用must not。Must I go tomorrow?明天我必须去吗？Yes, you must./No , you neednt.注意:must= have lo.但有区别：musi表示说话人的主观思想,have to “不得

7、不，必须，表示客 观需要、客观绍牛只能如此。You must do it now.你必需现在就干。（说话人认为必须现在干）I have to go now, (客观条件必须现在走)need 的主要用法) need作情态动词，表“需要”,多用在否定式或疑问句中.Need I attend the meeting tomorrow?-Yes, you must./No , you neednt.-You need not hand in (he paper this week.) need也作实义动词，用法是need to do sth./sthHe needs to finish his hom

8、ework in time.I need your help.need 主动表被动的用法：sth needs doing=sth needs to be done.The room needs cleaning.=The room needs to be cleaned.need做名词的用法：meet ones needs=satisfy ones demands in (great) need of (急需)should的主要用法意思为“应该二表示劝告、建议、命令，其同义词是ought to ；在疑问句中，通常用should代 替 ought to0You should go to clas

9、s right away.Should I open the window?ought “应当；应该”。用法则 ought io do sth.You ought to read these books if you want to know how to repair the motorcar.shall的用法意思为“将要/应该”1)用于第一人称征求对方的意见，如：What shall I wear on the journey?我路上穿什么好呢？Shall we dance?我们跳舞好吗?情态动词will和would的用法will (would)表决心、愿望。would为will的过去式，

10、可用于各人称。Ill do my best to catch up with them.Ill never do it again, thats the last time.He said he would help me.注意Wilk would用于第二人称疑问句表示说话人向对方提出请求或询问，用would比will更 螭客气。may be 与 maybe二者都有“或许，也许”的意思，但用法不同：. may be是情态动词,只能用于句子中,如:Its eight oclock now. My father may be at home. maybe 是副词,相当于 perhaps, prob

11、ably, likely ,常用于句首。如:Its eight oclock now. Maybe tny father is at home.had better 最好had better do sth. / had better net do sth.(重点)You had better keep silent in class.公四、易错点:()、can, may, must, need, should 的提问与应答：. Can I go to the cinema tonight?Yes, you can./No, you cant. May 1 have a look at your

12、 photos?Yes, you may / can./No, you mustnt / cant. Must I book a ticket for the concert right now?Yes, you must./No, you neednt / dont have to. Need I water the flowers in the garden in the afternoon?Yes, you need / must./No, you mustnt.(二)、表示判断：may / may not, must ( be ) / cant ( be )(1).判断语气坚定，有理有

13、据(常摆出理由).肯定判断(must )e.g. The light in the office is on. Our teacher must be still working.It must have rained last night, for the ground is wet and muddy.否定判断(cant / can not)注:不能用must not或mustnt形式e.g. Mr. Green cant be at home, for I met him at the street just now.This book cant be Bettys. She doesn

14、t like detective stories.(2).判断语气不坚定，模棱两可，不确定，常附带有Im not sure /1 dont know等句子。e.g. How soon will your father come back home from London?May be in a week, but Im quite not sure.三、课堂练习Grammarmodal verbI.Choose the best answer.选择填空。I.Choose the best answer.选择填空。1 .Tom gets up early every day except Sat

15、urday or Sunday, because hego to school.A. mustntB. needn,tC. shouldntD. cant2.Thanks to the first development of communication technology, people in China2.Thanks to the first development of communication technology, people in Chinamake phone callsanywhere at any time.A. shouldB. wouldC. mustD. can

16、3.Angela needs to download Translating App when she visits Spain.Shespeak a single Spanishword.A. mustntB. cantC. needntD. shouldnt4.Can I fish here?-No, you.The sign says,No fishing.A. mustntB. needntC. may notD. shouldnt5.If time allows, we.5.If time allows, we.lake a walk along the view path and

17、take some photos.A. canB. needC. mustD. ought6.Mum lold me that I6.Mum lold me that Ibe afraid of difficulties and should learn to be brave.A. didnt needB. neednt toC. needntD. not need7.This notebook7.This notebookbe Toms. Look at his name on the cover.A. mustB. mustntC. canD. can,t8.Our road infor

18、mation system should be improved so that we8.Our road information system should be improved so that weknow the road condition ahead oftime.A. mustB. shouldC. canD.could9.By the time Jack was ten, he9.By the time Jack was ten, hespeak Greek and Gennan fluently.A. wouldB.shouldC. mightD. could10.A1I passengers _go through safety check before the