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must have done 表示猜测那 must do 表示什么

分类: 作业答案 • 2021-12-20 03:26:43

问题描述：

答

必须，不得不

答

给你例句：
You must have read the book.你一定读过这本书
You must read the book.你一定要读这本书
You must have shown up in today's meeting. 今天的会议你一定出席了.
You must show up in today's meeting. 今天的会议你一定要出席.
must do的意思是必须做某事
must have done是对过去已有的事实做肯定的猜测

All that must be done ____(do).答案是have been done,为什么是这个答案?这句话是现在完成时吗?
关于IF条件句if条件句中did would do 表与现在事实相反的猜测had done would have done 表与过去事实相反的猜测那么 did would be doing 与 had done would have been doing表示什么呢再顺带问一个问题 my favoutite animal is pandas 还是 my favourite animals are pandas 还是 my favourite animal are pandas还有两个不可数名词谓语动词用什么如 milk and bread is/are my breakfast
Marie _____a restless person. she kept moving from country to countryA must be B must have been 答案为B 我只知道must have been用表示对过去的推测怎么这句陈述的话也用呢A为什么不能用呢求解释谢谢
（1）If什么时候意思表示“是否”?（2）L didn’t know.Where will he go = L didn’t know Where he would go .为什么用would?（3）Here is _____ order ,All of you must obey it.(4) We watch the opening ceremong pf the World Expo on TV ______ last night.(5)TOM would go to vist his grandparnts if he had free time on Sunday.为什么用would?(6) Have you ever been in a maglev tarin 为什么用in
We must do our best to prevent that kind of thing( )againA.happening B.to happen C.happen D.happened应该选哪一个呢,为什么我觉得这题表示被发生,可是happen无被动,所以到底是该选A还是选D呢?
关于反义疑问句的问题主句中如果有must,may这类表示猜测的情态动词,那么实义动词会*使用原形,可是在提出反义疑问句时,是会直接忽视猜测的情态动词的.那么反义疑问句中的助动词是不是先决定于状语?比如说如果主句总有明显表示未来或者过去的时间状语,那么反义疑问句中的助动词是否应该用did而不是do?可如果说主句中有明显的完成时的提示词呢?那么反义疑问句中的助动词莫非要用have?
Where is Jack?I can't find him anywhere.he___his homework upstairs.A must have done B must be doing我知道这里应该选择must be doing 理解为他正在楼上做作业.可是为什么不能选择must have done呢?这里不是问JACK在哪里吗?那应该表猜i测阿.must have done 不就是表猜测的嘛.如果不是的话,在哪种情况下用must have done 比较合适?
用所给词的适当形式填空.有两个地方不懂.（1）If your homework ＿（do）,you can go out to play.（1）If your homework ＿（do）,you can go out to play. （2） My mother has some clothes＿（wash）every morning.我看了答案,第（1）题是is done .请问为什么不是has done.表示已经完成.have +过去分词不是表示已经完成了吗,is done和has done区别在哪,be动词+过去分词好像是被动语态的结构,那么岂不是翻译成”被完成“,还有第（2）题是to wash,请问为什么用不定式to,是有什么固定结构么?麻烦各位替小生解答,不甚感激!
must与must have done 的区别是什么?猜测的时态
Have you told my father about the awarding ceremony?– Yes, but he is too busy. I don’t think he ____. But in case he ____, let him sit between us.A. is coming; is B. will come; does C. would come; will D. comes; do选B,第一个空填will come和 is coming都可以?吗?,都表示将来.那后面为什么是does?
must have done 和 must do 有什么区别!哪一个是表示对过去的猜测呢?有人说must后面接动词原形是对现在的猜测!
must have done不是解释本该做的没做么怎么有时是对过去的猜测?有点乱谁能帮理下～

must have done 表示猜测 那 must do 表示什么

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must have done 表示猜测那 must do 表示什么