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1. can 表示能力 I can drive a car.can=be able to I can drive a car.= I am able to drive a car.can-could be able to was were able toI could walk when I was one year old.I was able to walk when I was one year old.(at the age of one)I will be able to arrive in Beijing on time.Could you please close the door?= Would you please close the door?请你关上门好吗?否定推测用cantHe _cant_ be LiMing, Li Ming has gone to Shanghai.2. May I use your pen? maybe 与may be的区别合首 Maybe you are right.分中 You may be right.表示可能推测的词could might mayHe might be Li Ming, I am not sure.3. must表示,必须 带有命令和要求的语气As soldiers , we must obey the orders.作为士兵,我们必须服从命令。Must I finish my homework now?No, you neednt.= No, you dont have to.must 表示肯定推测 The book must be Li Mings. His name is on the book.4. should 与shallShall we go swimming now?表示建议的句型We should study hard.5. would与will WouldWill you please listen to me carefully?6. had better 最好You had better get up now or you will be late for school.否定句You had better not =Youd better not7. cant 意为不能或不可能I cant speak English.There is no cloud in the sky. So I think it cant rain.8. mustnt 禁止 You mustnt play soccer on the road. We mustnt cross the road when the traffic light is red.9. needntMust I finish my homework now?No, you neednt.= No, you dont

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