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问题 是补足语还是状语？请详解

It is not necessarily a selfish notion,because achieving the dream is assumed to make America strong.不定式是作目的状语还是主语补足语？还要一个简单的句子 I saw him taking their children to college.to college是作taking的目的（地点）状语，还是作宾语补足语...

问题 现在进行时表示感情色彩的用法疑问

老师，现在进行时常用来描写一种状态，往往显得生动，具有感情色彩，在这种用法中还伴有正在进行的含义了吗？The sports meet is going well.I am missing you very much.

问题 hear sb do/doing的区别

We often hear some students ____ spoken English in the English corner.A. practice  B. practicing根据语境感觉填B合适，但是又觉得AB两个都可以，盼望专家老师解惑。

问题 while 的用法

—I'm going to the post office.—_______ you're there, can you get me some stamps?A. As    B. While   C. Because  D. If答案为B. 有的解释说是引导让步状语从句，不对吧？这里的while是当什么时候讲还是既然的意思？两者说法网上都...

问题 what可以引导非限定定语从句吗

North Korea fired four ballistic missiles in the early hours of Monday morning, in what Japan's leader described as "an extremely dangerous action."上句中的what引导的是非限定定语从句吗？

问题 句子成分分析（and again是什么用法）

The postcard is marked 1916 and again September 2010 when it was stamped to arrive.这个句子中 and again 是什么用法？还有那个 when 引导什么从句？

问题 including等于which include吗

It’s best to contact a guide to learn about accessing these falls, which include those further upstream in the Seven Sisters group.上文中的 which include 可以换用 including 吗, 是所有的 including 都可以换成 which include 吗？谢谢老师回答。

问题 介词on与for的一个用法区别

The doctor is busy preparing an operation____this patient.A.for  B.on正确答案是B. 但我怎么感觉是用for？难道for就不对了吗？还是答案有误？

问题 定语从句和同位语从句的判断

Singapore has a land reclamation project that builds up additional land from the sea floor.这句话从that充当成分来说是定语从句，但是感觉意义上that的引导的句子是对project的解释说明。那么到底是什么从句呢?

问题 破折号后面的成分如何理解

...nterviews for stories, doctor’s appointments—anything to get me out of the house and connected with others.编者译文：我安排采访好写报道，预约看医生——安排任何需要我出门与他人接触的活动。

问题 sand的复数形式用法

Once the sands have run out of a person's hourglass, they cannot be replaced. 1. sand 作沙子时是不可数名词，但是这句的意思是沙子从沙漏计时器中跑走了，怎么用了-s复数形式。我看算了网上有的说法是强调一粒粒沙子，是这样么?2. sands ...

问题 如果理解句子中的but that

He also agreed to tell the Stapletons that Homes and I had gone to London,but that we would return to...老师，如何理解but that? 是另一方面的意思吗，表转折吗？这是个副词短语吗？

问题 make it to...是什么意思

专家请看以下句子：Joanna has finally made it to the first rank of celebrity after 25 years as an actress.【乔安娜当了25年演员后，终于跻身一线女明星之列。】请帮我分析这个句子的结构，谢谢！ 

问题 句首状语中用现在分词与过去分词的区别

Bathed in the warm sunshine, we entertained us with stories, songs, dances and games.  这句话中，Bath 为什么不是用的 bathing 呢？

问题 as well as和than

The outcome depends on conditions as well as on how events unfold.这里on并列的宾语不对等，是否为语法错误？ As well as 不能连接并列分句，是省略的结果。是否than也可以理解为：不能连接并列分句，是省略的结果？