英语情态词组及其意思答:can (could),may (might),must,need,ought to,dare (dared),shall (should),will (would) .情态动词的位置:情态动词在句中放在谓语动词之前,谓语动词前若有助动词,则在助动词之前,疑问句中,情态动词则在主语之前.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...
情态动词有哪些及用法?答:基本助动词有三个:do,have和be;情态助动词基本的有十四个:may,might; can,could; will,would; shall,should; must,need,dare,used to,ought to.had better 上述两类助动词的共同特征是,在协助主动词构成限定动词词组时,具有作用词的功能: 1) 构成否定式: He didn't go and neither did she. 他没去,她...