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问题 need have done 结构存疑

Those who failed to get in need not have felt disappointed.以上摘自新概念2课文中。needn't have done 我能理解，是本用不着做实际做了，但课文下面有个注释让我有点困惑。“need后接不定式的完成式表示不必做某事而实际已经做了。"我...

问题 不及物动词+宾语和不及物动词+状语如何区分

...  leave for a place 这个地方是宾语还是状语sit on 或者 arrive in呢? 可以通过是否可以灵活移动到句首判断吗?

问题 这个独立结构是代词加上了比较分句吗

...整句子：Through hard practice，Lucy，herself not much more than a beginner，made rapid progress in speaking German.我的疑问就是，herself not much more than a beginner，是个独立结构吗，因为在看反身代词的相关知识，看到反身代词作主语时和后面的构成独...

问题 关系分句的分类

...没有划分在四大类之中，那下例句子算什么分句？如： In 1906, however, Pierre, who was crossing a road, was run over and killed. (加粗部分相当于时间状语从句when he was crossing a road)这样的句子能不能算状语从句呢？（状语从句由从属连词引导...

问题 how much有哪些具体用法（可表示哪些意思）

how much 好像有不少用法，如：How much is the pen? 这钢笔多少钱？How much do you weigh? 你体重多少?第一句的 how much 表示“多少钱”，第二句的 how much 表示“多重”，请问除此之外，how much 还有哪些用法？谢谢老师讲解！

问题 如何理解词典对acceptation释义中的as having

the meaning that a word or expression is generally accepted as having. 句尾的 having 作何解释啊？这是词典里对 acceptation 的释义句子，我看不明白 having 在这怎么用的。最好是注明语法结构。谢谢！

问题 to have separated ...在句中作定语还是状语

Hospital staff burst into cheers after doctors completed a 20-hour operation to have separated one-year-old twins at the head.疑问：to have....在句中作定语还是状语，是什么状语?

问题 then连接两个句子(前面要不要加and)

We usually get up at 6:30 a.m., then having a washing and getting dressed quickly, we go to the sports ground to take some exercise, such as running, doing morning exercises, etc.  请问 then 前面要不要加 and，谢谢!

问题 为什么说 You shall…而不是You will…呢

You shall receive all the money that is owed to you.请问专家：这里为什么用 You shall…而不是You will…呢?

问题 下文中的动词is为什么不用复数are

下文中的动词 is 为什么不用复数 are?He says the reasons for differences between high schools is something that teachers are best positioned to explain.

问题 warn off 后跟 doing sth 结构

请教老师warn off 这个词：He was warned off buying the house.查字典发现这个句子用 doing 形式，但是 warn off 字典归类为短语动词，那这个句子后面 doing 作什么成分？能否把这个短语动词分开来看，off+doing 看作介宾短语，这样其就能充当...

问题 情态动词can,may,have to的区别

After you read the article Why fast food is slowly killing you, you _______ stop eating fast food.A.can  B.may  C. have to  这题选什么，为什么？

问题 go big and go quick第二个go多余吗

So again the incentives are to go big and go quick.请问老师，第二个go多余吗？

问题 ​have reason to believe中不定式作什么成分

we have reason to believe Faye manipulated the Ethics Board for person gain.这里不定式作补语定语还是同位语？如何判断的？

问题 make sb do与make sb done

Being up to five minutes late is acceptable, but requires a short apology for making the other person wait.wait为什不用过去式，还是只是笔误？应该是make sb done才对呀