2018初中英语情态动词ppt课件.pptx

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1、C O N T E N T S一、情态动词的那些事儿一、情态动词的那些事儿二、情态动词的那些一般用法、情态动词的那些一般用法三、情态动词的那些推测用法、情态动词的那些推测用法四、情态动词的那些特殊用法、情态动词的那些特殊用法情态动词的那些事儿情态动词的那些事儿PART ONE情态动词的那些词儿maymight cancould willwould shallshouldmusthave toneed 情态动词的那些特点Cai Xukun can sing songs well.Fan Chengcheng can sing songs well too.But Dong Yanlei cant

2、 sing songs well.3.3. 有助动词有助动词的作用的作用1. 1. 不能单独不能单独作谓语，必须与作谓语，必须与动词原形动词原形连用连用2. 2. 没有没有人称和数的人称和数的变化变化情态动词里的那些一般用法情态动词里的那些一般用法PART TWO may/might can/could will/would shall/should must/have to/needMay I go to the Ball?Yes, you may.Yes, you can.No, you mustnt.No, you cant.maymight意义：请求获得对方的允许，“可以”might

3、(委婉语气)否定-mustnt/cant肯定-may/canmusthave toneed1.否定mustnt, “禁止”2.否定回答用 needntNo, you neednt.No, you dont have to.Must I do the housework?Yes, you must.musthave toneed3. must 与have to 的区别I must go to the Ball. But I have to finish the housework, before I go to the Ball.cancould 1.表具备某种能力：能，能够； could (过

4、去的能力) Cinderella could dance well in the past. Cinderella can dance well now.cancould 2. 表请求和允许：“可以”= may； could (委婉语气) 回答：肯定-can 否定-cant Could I dance with you?Yes, you can.知识要点总结知识要点总结情态动词本意may, mightcan, couldmust允许 能力，允许必须否定含义不能不可以不可以禁止回答 may/canmustnt/cant can cant must neednt1. -Must he sing t

5、he song in English ? -No, he _.A. neednt B. cant C. mustntPractice makes perfect2. -Mum, _ I visit the science museum tomorrow ? -Im afraid you_. It is closed on Monday.A. must; mustnt B. may; cantC. should; cantPractice makes perfect3. -Mum, _ I play football this afternoon ? -Sure, but you _ finis

6、h your homework first.A. may, could B. can, must C. can, mustnt D. may, cantPractice makes perfectwillwould 1.用于第二人称的疑问句中，表“请求、建议”等; would (委婉)2.用于表示意志，意愿或决心，意为“会，愿意”。 will指现在，而would指过去。Will you marry me?Yes, I will.I will love you forever.shall should 1.征求对方意见，用于第一，第三人称疑问句中shallShall we hold our we

7、dding this Sunday?Ok.shall should 意为：应该。表达义务，职责（说话人的观点）shouldAs human, we should be kind to others.1. -Many people play with mobile phones all day instead of reading books.-Thats too bad. Everyone _ be a book lover. Reading is more enjoyableA. mayB. shouldC. wouldPractice makes perfectLets take a br

8、eak!情态动词那些推测用法PART THEREmay (might)can (could)must can/could may/might must 用于用于肯定句肯定句 “可能可能”might (可能性更小可能性更小)050100用于用于疑问句，否定句疑问句，否定句“不不可能，可能吗可能，可能吗”could (可能性较小；可用于可能性较小；可用于肯定句，疑问句，否定句肯定句，疑问句，否定句)用在用在肯定句肯定句中中 “一定一定”Guessing gameWho is this?It _ be Fan Bingbing.It _ be Guo jingming.It _ be Wang Ba

9、oqiang.Its a he.Its not very tall.He played as Tang Ren in the movie Detective Chinatown.mustmay/mightcant1. The girl in the classroom _ be Sarah. She has gone to the library.A. may B. must C. cant D. needntPractice makes perfect2-Whose book is this ? -I am not sure. It _ be Marys.A. shall B. must C

10、. mightD. canPractice makes perfect3. -Listen. I think it _ be Mr. White singing in the office. -No. It _be him. He left for London just now.A. must, mustnt B. may, mustnt C. must, cant D. can, canPractice makes perfect4. -He_be in the classroom, I think. -No, he_be in the classroom. I saw him go ho

11、me a minute ago.A. can； may notB. must； may notC. may； mustntD. may； cantPractice makes perfect情态动词的那些特殊用法PART FOURused to dobe/get used to doinghad better do情态动词的那些特殊用法 意义used to dobe/get used to doing过去常常做某事习惯于做某事Obama used to eat hamburger, but now he is used to eating spicy bar.情态动词的那些特殊用法 had b

12、etterhad better do 最好做had better not do 最好不要做Youd better work hard in middle school. 表达表达“建议建议”和和“忠告忠告”，had better do“为好为好”，建议某人建议某人“最好不最好不”，要用要用had better not do。1. My grandfather _ live in the countryside，but now he _ living in the city.A. used to; used toB. got used to; gets used toC. used to; ge

13、ts used toPractice makes perfect2. -Youd better too much time chatting online -OKI wontA. dont spendB. not to spendC. to not spendD. not spendPractice makes perfect1. -I dont care what people think? -Well, you _ . Youre not alone in this world.A. canB. mayC. shouldD. will真题演练2. -May I take the dog w

14、ith me, sir? - _ . Pets are not allowed to enter the hall.A. Yes, you may.B. No, you mustnt.C. Yes, you can.D. No, you neednt. 真题演练3. -Will Jim fly to Taiwan for a holiday? -He _ try. In fact, it depends on how much the journey costs.A. mayB. has toC. needD. must真题演练4. When you are travelling, bring a map because it_help you A. cantB. mustntC. used toD. may真题演练5. A good friend is someone you_share your pleasure and pain with. A. canB. mustC. needD. should真题演练Summary