shoulD 与must 的区别

《情态动词can, could, may, must, should用法》是广州市天河区第一实验小学提供的微课课程,主讲教师为杜少冰。课程简介 本微课主要学习小学常用情态动词can, could, may, must, should的用法。设计思路 本微课以Miss Li带着Chen

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

(除must)只有原形和过去式,没有过去分词。(共4个)cancould maymight willwould shallshould must 既没有过去式也没有过去分词。常用过去分词 be(am,is,are) (是)was,were been begin(开始) began begun drink(喝

1.情态助动词包括will(would), shall(should), can(could), may(might), must, need, dare, ought to, used to, had better,有词汇意义,后接动词原形(没有to的不定式)。2.情态助动词没有主语是第三人称单数时,

eg:I am thinking about whether I should quit my present job.4.只有whether可以和or not连用,且多放在句末。We didn't know whether or not she was ready.5.后面直接跟动词不定式时。6.whether可引导从句,作主语、表语、

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情态动词can, could, may, must, should用法
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过去分词
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