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– Could I use your mobile phone? I have to call my mom for the coming class meeting.
--Yes, of course you _____________.
A.mustB.canC.needD.will
B

试题分析:A. must 必须    B. can 能够   C. need需要     D. will将要;句意:我能用你的手机吗?我必须给我妈妈打个电话,叫她来参加班会。是的,你当然可以用。Could提问,表示非常有礼貌的请求,用can来回答,表示能够,故选B
点评:情态动词用法较多,无人称和数的变化, 情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加 "not"。 个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语气, 时态性不强, 可用于过去,现在或将来。中学阶段必须对它们的用法有个基本的了解,题目不难,掌握了平时出现的题目即可答出。
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