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问题 to which的用法

The existing form to which a derivational affix can be added is called a stem. 这里的to which的用法我不明白，可以讲解一下吗？

问题 现在分词做补充说明的作用

Japan is a country，standing near by China.我想请问下这里的现在分词用法对吗，是补充说明前面句子的作用吗，谢谢

问题 can't／couldn't be doing sth是表示现在进行时吗

can / could be doing sth，can't / couldn't be doing sth是表示现在进行时吗? can't和couldn't怎么选呢?

问题 help后面省略了什么（help后面可以直接跟动词吗）

This software will help increase your English vocabulary!老师，谓语动词后面省略了什么？

问题 it is known和 that之间有一个句子

... 1.     It ought to be universally made known, 后面跟了两个that 从句，是吗？ 2.     It ought to be universally made known和第一个that被隔开了，放了一个句子，这是什么结构，为什么？请各位老师各抒己见，谢谢曹老师及其他老师。

问题 a lot of, lots of, plenty of等也是限定词吗

我知道one, two three, all, both, many, much 等是限定词，但a lot of, lots of, plenty of等也是限定词吗？求教！

问题 count的意思

这里的count是什么意思？能否举几个是这个意思的count的例句。是占比的意思吗？没有在牛津高阶9中找到对应的意思。牛津高阶9中有这样一个例句：The fact that she had apologized counted for nothing with him.她已道歉，但他认为这没有用。...

问题 south的用法

...或朝南方这是美国传统英汉双解学习词典给出south作副词的释义，请问老师，这里的from 和toward是不是相互矛盾了?我查看了其他几部字典，south作副词时，没有from the 的south的用法。是字典有错误吗？

问题 句末介词的省略问题

Is the river deep enough for swimming (in)? 这句子中末尾需要介词in吗？盼专家老师指导。

问题 不定式的用法

They would do well to read “Shooting an Elephant”.请问老师，这个句子中well是做副词吗？不定式在这个句子中用作什么成分？

问题 over的用法

Melting ice in the Arctic will affect coastal cities the world over.over本身为副词，the world over是名词后面跟副词，如何理解呢？是一种固定用法吗？

问题 关系代词和连词

Intellect is to the mind__ sight is to the body为什么用what不用as

问题 be being+adj. 是现在进行时吗

请问老师：I am not being critical. She is not just being polite. I am being honest with you. 这种句式是现在进行时？谢谢！

问题 so的用法

曹老师，您好！前面您讲解了so作替代词的用法。还两个句型中so也是替代词来替代动词+宾语吗？为啥采用倒装形式？Tom likes English. So do I.Tom likes English. So he does.

问题 想请教你，第三段A对话里try and make，为什么不用try to make?还有第四段B对话

A：Is this your first time to set up for a trade show, David?B：No. I attended the fair last year.A：Other than selling interesting books, we have to try and make our booth stand out. That means we have to do something with this boring wall.B：That’s what the posters are for. I see they focus ...