must,can,should,may,shall,need,could作疑问词的回答答:must ; yes,...must. No,...needn't.can; yes ,...can. No,...can't.should; yes, ...should. No,...shouldn't.may; yes,...can. No,...can't.need; yes,...need.No,...needn't.could;yes,...can.No,...can't.
must should can/could 的区别和用法sorry,太多要求答:①只做情态动词:must,can(could),may(might),ought to ②可做情态动词又可做实义动词:need,dare ③可做情态动词又可做助动词:shall(should),will(would) ④具有情态动词特征:have(had,has) to,used to 特点: 情态动词无人称和数的变化, 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...
情态动词有哪些及用法?答:情态动词数量不多,但用途广泛,主要有下列: can (could),may (might),must,need,ought to,dare (dared),shall (should),will (would),have (to),had better. 情态动词还有一个很重要的用法,即情态动词表推测—— 情态动词表推测的用法小结 (一)情态动词表推测的三种句式 1.在肯定句中一般用must (一定),...