考点 6 情态动词1.主要考查的知识点: (1)情态动词的基本用法 (2)情态动词+完成式的用法 (3)情态动词的一些特定用法2.复习重点: (1)情态动词的意义以及不同的情态动词的用法区别 (2)must, can, should 等常见情态动词的用法 (3)must/ can/ should/ might+have done 的用法及区别 (4)含情态动词的疑问句的回答情态动词的基本用法 情态动词表示说话人的语气和情绪,本身词义不全,不能单独作谓语,必须与后面的动词原形一起构成谓语。情态动词没有人称和数的变化,有的情态动词有过去式。常见的情态动词有 can, could, may, might, must, have to, shall, should, will, would, ought to, need, dare, used to 等。用适当的情态动词填空(1)He could read books in English when he was only five.(2)Man can not live without air.(3)Could you wait a few days for the money?(4)Could/Can I borrow your reference books?(5)Oh, dear, what on earth can this mean?(6)They were able to put out the fire without any help from the firefighters.(7)You can not be too careful. (8)I couldn't do anything but choose to wait.1. can, could 的用法规则 1:表示体力或脑力(知识、技能)所产生的能力,如:(1)。规则 2:表示客观的可能性,如:(2)。规则 3:表示请求建议,用 could 比 can 语气更委婉,回答用原形,如:(3)。规则 4:表示允许、许可,用 could 比 can 更委婉客气,如:(4)。【注意】(1)在否定句、疑问句和感叹句中,表示怀疑、惊异或不相信的态度,如:(5)。(2) 表示“经过努力后终于能……”,用 be able to,如:(6)。(3) 惯用形式“can not (can't) … too/over/enough” 表示“无论怎么……也不(过分)”,用来加强用心 爱心 专心1语气,如:(7)。(4) cannot but do sth. 不得不;只好,如:(8)。 2. may, might 的用法(1) May I ask you a question? (2) Study hard in order that you may work better in the future.(3) Now that they were all here, she might as well speak her mind.(4) May you have a good trip.(1)表示允许、请求。Might I …? 比 May I …? 语气更为婉转和有礼貌:如:(1)。对于 Might I …? 的回...