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问题 it的指代问题

It will be helpful if you can take an active part in your class.请教老师这里的it 是形式主语，if 从句是真正的主语？还是说it 是个虚指？(求曹老师答）

问题 句子理解（,but lots more, too,）

She remembers her high school years as a grind of study and homework, but lots more, too, including leisure times.请问这个句子but lots more, too,怎么理解

问题 Less widely known are...是什么句式

...red bony ear structures between fish and humans.我在英文网站上看到的，Less widely known应该不能单独做主语，我想是不是省略了什么或者是固定搭配。想请各位老师赐教。

问题 struggle to do是“努力”还是“难以”

I was not the best student when it came to writing tests. I had to work extra hard to get good marks, although I enjoyed learning. Anyway, this class that I truly enjoyed still had me struggling to do well on my tests. My teacher willingly helped me and was always willing to answer my questions, and...

问题 Pumas never attack a human being expect____cornered.

Pumas never attack a human being expect ____ cornered.A.they are B.being C.that they are D.when they areexcept作为介词使用后面应该是可以跟动名词的，为什么这道题选B不对？

问题 a 100% increase in profit 中的冠词可以省掉吗

老师好！请问 a 100% increase in profit 中的冠词 a 可以省掉吗? a 100% 应该怎样读？

问题 这里的motion denied是作同位语吗？

The ruling was slightly longer than the one-sentence "motion denied" response in a Pennsylvania case earlier this week.句子中的motion denied是作response的同位语吗？还是作复合形容词修饰response，意味被动议否决的回应？希望老师解惑，谢谢！

问题 even是修饰后面的in spite of吗

I only insist that meaning is possible even in spite of suffering—provided, certainly, that the suffering is unavoidable. even是修饰后面的in spite of吗？都是表示“即使”的意思，那even是不是强调？

问题 几种时态都可以表示询问，请求，建议等婉转口气并且都是现在的行为，请问它们的区别！

...可以用在一般过去时，现在进行时，过去进行时表示现在的行为，请问用在这几种时态里有什么区别? 如：Did you wish to see me now? I wondered if you could help me. I’m hoping you’ll give us some advice. I’m wondering if I may have a talk with you. I wa...

问题 可以给我讲一下whatever的用法吗

还有whenever whichever之类的

问题 by next year 和 现在完成时关系？

...hem by next year.1）时间状语是by next year，那么谓语动词应该用完成时he will have grown into...吗？2）当时间状语带有类似by next year等时，谓语动词究竟是一般将来时还是将来完成时呢？3）本句中，如果去掉by,变成...he'll grow into them next ...

问题 介词like后为什么使用了动词原形restrict

...like后为什么不是like restricting tax breaks...呢？这里为什么用了动词原形restrict tax breaks...呢?

问题 过去完成时，过去时，现在完成时的辨析（基于in/within），以及对之前问题的疑问

....    其实，可以轻易分辨现在完成时和过去完成时的不同——是否和现在的时间连在一起。但是，《牛津》的例句则提供了另一种选择——一般过去时，而且《牛津》的例句也让我对 答疑网中的回答产生看了疑问。  &...

问题 关于分数的表达

... of eight people like you.老师我想问的是 one third不能直接用作定语（副词）修饰名词么？five in eight； five out of eight这种表达方式中可以直接用作副词修饰people 是否可以这么理解， 还是要将 five in eight students 看作一个整体？  如...

问题 as being broadcast on the BBC's channels是什么语法

The 50th-anniversary episode of the British television show was screened on 800 big screens in 20 countries at the same time as being broadcast on the BBC's channels.这句话中 as 的作用是什么？as being broadcast on the BBC's channels 是什么语法？什么意思？