1）should无词义，只是shall的过去形式，与动词原形构成过去将来时，只用于第一人称，例如： I telephoned him yesterday to ask what I should do next week. 我昨天给他打电话，问他我下周干什么。 比较：...
1）协助主要动词构成谓语动词词组的词叫助动词（Auxiliary Verb）。被协助的动词称作主要动词（Main Verb）。 助动词自身没有词义，不可单独使用，例如： He doesn't like English. 他不喜欢英语。 （...
托福语法讲解：助动词...
Unit 2 助动词、情态动词(三) 7. Research findings show we spend about two hours dreaming every night, no matter what we _____ during the day. A. should have done B. would have done C. may have...
Unit 2 助动词、情态动词(二) 4. With all this work on hand, he _____ to the cineman last night. A. mustn't go B. wouldn't go C. oughtn't to go D. shouldn't have gone 5. You _____ all those cal...
Unit 2 助动词、情态动词(一) 1. The room is in a terrible mess; it _____ cleaned. A. can't have been B. shouldn't have been C. mustn't have been D. wouldn't have been 2. You _____ her in her o...
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1）should无词义，只是shall的过去形式，与动词原形构成过去将来时，只用于第一人称，例如： I telephoned him yesterday to ask what I should do next week. 我昨天给他打...
一.本课要点及示例: 在这一课里, 我们要学习助动词 could, c-o-u-l-d, could 和两个助动词短语 would like to, w-o-u-l-d l-i-k-e t-o, would like to 跟 ought to, o-u-g-h-t t-o, ought to. 我们也要学习用连接词 because, b...
一.本课要点及示例 在这一课里我们要学习怎么用助动词 can, c-a-n, can, may, m-a-y, may, will,w-i-l-l, will 和might, m-i-g-h-t, might.首先我们依照惯例, 先请你听一段对话, 内容是说 peter 在学校里跟同学 Ma...
