2018初中英语情态动词.pptx

情态动词,目 录,CONTENTS,一、情态动词的那些事儿 二、情态动词的那些一般用法 三、情态动词的那些推测用法 四、情态动词的那些特殊用法,情态动词的那些事儿,01,PART ONE,情态动词的那些词儿,may might can could will would shall should must have to need,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 sing songs well.,3. 有助动词的作用,1. 不能单独作谓语，必须与动词原形连用,2. 没有人称和数的变化,情态动词里的那些一般用法,02,PART TWO,may/might can/could will/would shall/should must/have to/need,May I go to the Ball?,Yes, you may. Yes, you can.,No, you mustnt. No, you cant.,may might,意义：请求获得对方的允许，“可以”might (委婉语气),否定-mustnt/cant,肯定-may/can,must have to need,否定mustnt, “禁止” 否定回答用 neednt,No, you neednt. No, you dont have to.,Must I do the housework?,Yes, you must.,must have to need,3. 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.,can could,1.表具备某种能力：能，能够； could (过去的能力) Cinderella could dance well in the past. Cinderella can dance well now.,can could,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,情态动词,本意,may, might,can, could,must,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/can,mustnt/cant,can,cant,must,neednt,1. -Must he sing the song in English ? -No, he _.,A. neednt B. cant C. mustnt,Practice makes perfect,2. -Mum, _ I visit the science museum tomorrow ? -Im afraid you_. It is closed on Monday.,A. must; mustnt B. may; cant C. should; cant,Practice makes perfect,3. -Mum, _ I play football this afternoon ? -Sure, but you _ finish your homework first.,may, could can, must can, mustnt may, cant,Practice makes perfect,will would,用于第二人称的疑问句中，表“请求、建议”等; would (委婉) 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,shall,Shall we hold our wedding this Sunday?,Ok.,shall should,意为：应该。 表达义务，职责（说话人的观点）,should,As 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 enjoyable,A. may B. should C. would,Practice makes perfect,Lets take a break!,情态动词那些推测用法,03,PART THERE,may (might) can (could) must,can/could may/might must,用于肯定句 “可能” might (可能性更小),0,50,100,用于疑问句，否定句 “不可能，可能吗” could (可能性较小；可用于肯定句，疑问句，否定句),用在肯定句中 “一定”,Guessing game,Who is this? It _ be Fan Bingbing. It _ be Guo jingming. It _ be Wang Baoqiang.,Its a he. Its not very tall. He played as Tang Ren in the movie Detective Chinatown.,must,may/might,cant,1. The girl in the classroom _ be Sarah. She has gone to the library.,A. may B. must C. cant D. neednt,Practice makes perfect,2-Whose book is this ? -I am not sure. It _ be Marys.,A. shall B. must C. might D. can,Practice makes perfect,3. -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, can,Practice makes perfect,4. -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； mustnt D. may； can't,Practice makes perfect,情态动词的那些特殊用法,04,PART FOUR,used to do be/get used to doing had better do,情态动词的那些特殊用法,意义,used to do,be/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 better had better do 最好做 had better not do 最好不要做 Youd better work hard in middle school.,表达“建议”和“忠告”， had better do“为好”， 建议某人“最好不”， 要用had better not do。,1. My grandfather _ live in the countryside，but now he _ living in the city.,A. used to; used to B. got used to; gets used to C. used to; gets used to,Practice makes perfect,2. -You'd better too much time chatting online -OKI won't,A. don't spend B. not to spend C. to not spend D. not spend,Practice makes perfect,1. -I dont care what people think? -Well, you _ . Youre not alone in this world.,A. can B. may C. should D. will,真题演练,2. -May I take the dog with 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. may B. has to C. need D. must,真题演练,4. When you are travelling, bring a map because it_help you,A. cant B. mustnt C. used to D. may,真题演练,5. A good friend is someone you_share your pleasure and pain with.,A. can B. must C. need D. should,真题演练,Summary,Thanks for your attention,