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问题 when, as, while, since的区别

_____ Tom waited for the exam result, he became less and less patient.  A. When    B. As      C. While   D. Since 答案为 B。请解释一下 when 与 as 的区别，谢谢！

问题 ing做主语和to do做主语的区别

Missing the train means waiting for another hour.这句话的missing 可不可以改成 to miss。ing做主语和to do 做主语有什么区别。

问题 同一个句子三个that的作用

Although scientists have known for a long time that about 2% of people suffer from face - blindness, which means that they have huge problems recognising faces, they are only new realising that some people are the exact ones.这三个that的作用是什么呢？

问题 非谓语动词done和being done辨析

The man kept his eyes ____ on his baby for quite some time.A fixed   B being fixed请问这里为何用A ，非谓语动词做宾语不是只能用to do 或 doing 吗？

问题 区分when引导定语从句和时间状语从句

Do you remember all those years when scientists argued that smoking would kill us but the doubters insisted that we didn't know for sure?这句话并不缺成分，为什么when引导的是定语从句而不是时间状语从句？

问题 代词that可以作同位语吗

Falling in love and kissing another person — that is what you read novels for, and that’s what you write novels for. 代词that可以作同位语吗？that在这里应该如何理解呢？

问题 难句分析与理解

... paradox, decided only to be undecided, resolved to be irresolute, adamant for drift, solid for fluidity, all powerful to be impotent.

问题 the one time是什么用法

...rible pictures over and over again．When I Watched family members looking for their loved ones, the pain in their eyes was something I would never forget．I couldn't understand how something this terrible could have happened．老师好！阅读上述文字，我遇到几个问题：一、第一...

问题 否定句种类判断(absoulte negative, partial negative, meaning negative)

... helped the aeronautical instructor Jerome C. Hunsaker build a wind tunnel for studying aircraft design before anyone knew what aviation engineering was.3. In the same workmanlike manner as Sheffield, he concluded that characters could not be treated as anything but individual wholes.4.There was no ...

问题 定语从句的简化（those who will study可以改成those to study吗）

待讨论的句子:"Learn through use" is a good piece of advice for those ______ (study) a new language.答案是studying。这里的含义应该是who are studying或者who study。有人说可以填to study，意思约等于who will study。我认为应该不可以，但是不知道如何解释...

问题 ​Australia fire/Australian fire/Australia's fire比较

... are dying from the Australian fires, and the environment will suffer for years to come视频下的标题为Video shows hundreds of animals died trying to flee Australia fires 00:55文中分别用了Australian fires和Australia fires，这两者有什么侧重点吗？可以使用Australia...

问题 句子的语法分析

请问这个句子成分怎么分析？It is a common phenomen for college students to have a poor academic motivation.有几个问题想要请教一下，麻烦老师们了！这个句子it的作用是什么？是做形式主语吗（真正主语是哪个）？还是说它是一个强调句？it is...

问题 句子内容分析

...（在句首/句尾）、by/through…凭借…（在句首/句尾）、to/for…对于…（在句首）、汉语的“针对/就…内容/情况/问题”（在句首/句尾）；4.snapped at his secretary not to disturb him.这句话（1）它是（主谓+双宾）结构，还是（主谓+宾+宾...

问题 这个since的主句为什么不用完成时态？

当since表示“自从”时，它的主句谓语总是要用完成时态的，但是下面这句中，主句却用了现在进行时，请问这是为什么？House prices are rising for the first time since November. 房价自 11 月以来首次上涨。

问题 定语从句问题（最后一个you是否是多余的）

You're the one who you said you were looking for a fight with Oboi. 你才是你说的要找鳌拜打架的人。这句话中的最后一个 you 是不是应该省略掉呢？