高中英语语法专题——情态动词讲解与练习 无答案

高中情态动词 情态动词本身有词义，但是没有人称和数的变化。情态动词有时态变化，但是不能独立作谓语。 情态动词可以表示：能力、义务、可能和允许等意义。 情态动词还可以用来给人们：提出请求、提出建议、提供帮助以及提出建议意见等。 1、 can/could 用法 1. 表“能力” 2. 表“允许” 3. Can never/can’t...too...表示“无论怎样...也不过分”、“越...越好” 用法：can not but do sth Can not help but do sth 例：I ________thank you too much for all your help to my son while we were away from home. A. won’t B.can’t C.can D.will 例：He is such an unselfish man. You cannot help but ________him. A. respect B.to respect C.neglect D.to neglect 例：I ________ the truth of your remarks, although they go against my interest. A. cannot but admit B.cannot but to admit C.cannot but admitting D.cannot help but 4.表示“经过努力后终于能... ...”用 be able to比 can更能多的时态形式上的变化。 二、may与might 1.表示允许，意为“可以，许可”用法同can或could 2.表示可能性，意为“也许，可能” 3.may 可以放在句首表示祝愿 4.may和might可和（just）as well 表示“建议”, 译为”还不如，倒不如，不妨”等。 例：The taxi was so slow, we may _______ have gone on the bus. A. as well as B.just as well C.so well as D.too 例：—Well, lost again! —It is not very important. We __________ forget about it.OK? A. cannot but B.have to C.might well D.might as well 三、must与have to 1.must “必须” 表示说话人主观看法 have to “不得不”表示客观需要，强调外部压力 2.表示不必需用don’t have to 或者needn’t, needn’t, mustn’t “禁止” 3.表示”偏执”, “固执” —_______ you interrupt now? Can’t you see I’m on the phone? —Sorry Sir, but it’s urgent. A. Can B.Should C.Must D.Would 4、 shall 1. 用于第一、第三人称疑问句中、表示说话人征求对方意见和向对方请示 例：—_______I book a table for dinner in advance? —Yes, you ________. The restaurant is always full of people. A. must; can B.will; will C.shall; need D.shall; must 例：—_______he come in or wait outside? —Let him in, please. A. Shall B.will C.Does D.Has 2. 用于第二、第三人称陈述句中，表示说话人给对方的允诺，命令，警告，威胁，强制，在条约，规章，法令等文件中表示义务或者规定。 例：—I haven’t got the reference book yet, but I’ll have a test on the subject next month. —Don’t worry.You ______have it by Friday . A. could B.shall C.must D.may 例：Y