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1、中考英语总复习 情态动词,情态动词,概念: 情态动词是表示情态意义的动词,他表示说话人的语气和情态,它不能单独作谓语,必须与实义动词一起构成谓语,情态动词没有人称和数的变化,过去式通常表示更客气、更委婉。 I can speak English .He can speak English. They can speak English, too. Can you help me? / Could you help me?,初中阶段必须掌握的情态动词:,can ( could ) 能,会 may (might) 可以,可能 will (would) 将,会,愿意 must 必须 have to不
2、得不 need 需要 sb need to do sth sth need doing should应该 had better 最好 had better (not) do sth最好不要,情态动词开头的疑问句的答语,易混词的辨析,(一)must 与have to We _study hard . We _stay at home because it is raining. 提示:must 表主观看法,意为“必须”。 have to表客观需要,意为“不得不” (二)maybe与may be _he is right . It_ rainy tomorrow. 提示:may 为情态动词后接动词
3、原形。Maybe为副词意思为“大概,也许”,must,have to,Maybe,may be,易混词的辨析,(三)can与be able to I_ speak English now. My sister _ speak English two years ago. My brother _ speak English in the future. 提示;can 只有现在和过去时(could) be able to可用于任何时态中。 (四)cant 与mustnt cant 表“不可能”。mustnt表“禁止,不许”。,Can/am able to,could/was able to,wi
4、ll be able to,注意:(1)由need引出的一般疑问句,肯定回答常用must或have to;否定回答常用neednt.如:Need I answer the question?需要我回答这个问题吗? Yes, you must/have to./No, you neednt.是的,你必须回答。/不,你不需要。,(2)need作为实义动词,有人称和数的变化,后面可接名词、代词、动名词及带to的动词不定式;可用于肯定句、疑问句和否定句中。如:She doesnt need to see the doctor. She just needs a rest.她不需要看医生,她只需要休息一下就好了。 dare,情态动词表推测的用法,