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1、情情 态态 动动 词词 常见的情态动词有常见的情态动词有 can , could , may , might , must , need , have to , should 等等. 所有的情态动词后面都接所有的情态动词后面都接动词原形动词原形. Eg: I can swim . He has to go now .1. can 能够能够,会会,可以可以 Eg: I can speak English well . Can you tell me how to start the machine?此外此外, can 用来表示用来表示否定否定推测和推测和疑问疑问推测推测 Eg: That can
2、t be our English teacher because she has gone to Shanghai . Can it be true ?2. may 可以可以,可能可能,也许也许 Eg: You may go with me . - May I borrow your pen ? - Yes , you may . No , you _ cant / mustnt . 此外此外, may 表示可能时注意和表示可能时注意和 maybe 的区别的区别 maybe 可能可能(副词副词),不能做谓语不能做谓语,常在前面常在前面 Eg: Maybe you know the old ma
3、n . = You may know the old man . may 常放在句中常放在句中,和动词原形一起做谓语和动词原形一起做谓语 1) I dont know. _he can tell you. 2) I dont know. He _tell you . Maybe may3. must 必须必须 mustnt 严禁严禁,禁止禁止,不许不许 Eg: I must learn how to work . You mustnt play in the street . - Must I finish the work now ? - Yes , you must . No, you n
4、eednt / dont have to(不必）不必）. 此外此外 must 用于肯定推测用于肯定推测,表示表示 肯定是肯定是 Eg: The book must belong to him because we can see his name on it .4. need 需要需要 既可以做实义动词也可以既可以做实义动词也可以 做情态动词做情态动词1)实义动词实义动词 need to do sth 需要做某事需要做某事2) Eg: I need to buy a big house .3) - Do you need to buy a big house ?4) - Yes , I do
5、. No, I dont .5) He needs to borrow a map .6) - Does he need to borrow a map ?7)2) 情态动词情态动词 need do sth 需要做某事需要做某事8) Eg: I need buy a big house .5. have to 不得不不得不 Eg: Its eleven oclock . I have to go now . He has to finish the work first . 请注意请注意: I dont have to go now . He doesnt have to finish the
6、 work first. have to 和和 must 的区别的区别: have to 表示客观因素表示客观因素 Eg: We are very glad at the party , but its 11 , so we have to leave now . must 表示主观因素表示主观因素 Eg: We must study hard to find a good job for ourselves .6. Youd better do sth 你最好做某事你最好做某事 Eg: Youd better buy the book . Youd better not do sth 你最好
7、不要做某事你最好不要做某事 Youd better not run in the classroom .巩固练习：巩固练习：1,-Can you tell me _English at home? -Listen to the English programme. A, how to read B, how to learn C, when to use D, where to use2, Please tell Lin Feng _to turn off thelights when he _. A, to not forget , leave B, dont forget, will le
8、ave C, not forget , leaving D, not to forget , leaves3, -Would you mind _with me ? -Of course not . A, taking photos B, to take photos C, takes photos D, take photos B D A4, -Jenny , let me tell you a secret. I am tired of my mum these days . -Why? -She makes me _at Nanshan stadium every Sunday afte
9、rnoon. A, dance B, danced C, to dance D, dancing5, Its nice _me with my Chinese A, for you to help B, of you to help C, to you of helping 6, -Why dont you start the machine ? -This is new and I dont know _it A, where to start B, when to start C, how to start D, what to start A B C C7, When I went by
10、 Jeans house , I heard her _a song to the music in the room . A, to sing B, sang C, singing D, sings8, She makes you _and you like her very much . A, laughing B, to laugh C, laugh D, laughed9, I dont know _. A, which one to choose B, to choose which one C, which to choose one10, Can you let him_ hom
11、e a little earlier? A, go B, goes C, to go11, She stopped _ and talked to me . A, working B, to work C, works C C A A A12, Remember _the lights before you leave the lab . A, to turn off B, turning off C, turn off13, She was heard _a song last night . A, sang B, sings C, to sing14, Tim was so busy _a novel that he _to have dinner. A, reading, forgets B, to read , forgot C, reading , forgot15, My father enjoys _to light music . A, listens B, to listen C, listening16, Thank you for _me ! A, tell B, telling C, to tell17, Its time _. A, play games B, to play games C, playing games A C C C B B
