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问题 受定语从句修饰的wind前面为什么没加定冠词

The warm air rises from the land. The eagle finds wind that is rising and rides on it.请问老师，第二句中的wind，为什么不加the。我看到wind后面跟了一个定语从句的进行时态，应该是个特定的情况，但wind却没加the。恳请老师帮助。

问题 sb is believed to do/to be doing/to have done句式归纳

这里面的 sb is believed to do/to be doing/to have done，什么时候该用哪个？除了 believe，还有哪些词还可以这样用？    

文章 watch/notice sb do sth有被动语态吗

... do这类结构的动词时指出：The other exceptions are have, notice, and watch, which have no passive at all in this sense.（have, notice和watch是例外,它们根本就没有被动式）PEU在讲述“verb+ object + infinitive or -ing form”结构的被动式时也明确指出：Passive fo...

问题 be upset …句子分析不清

①that后面的一堆作的是什么成分?原因状语还是同位语。She was upset that he left without saying goodbye.他不辞而别让她感到不安。 ②为什么是is能不能用was?为什么是用passing而不是passed?（his not passing）（the）作的是exam的定语吗？Tom is up...

问题 前面的it可以指代后面的内容吗

The program modeled it，after the American show “National Spelling Bee”.请问后面的句子是修饰前面的 it 吗？这个 it 是指代什么？它可指代后面的内容吗

问题 would rather + be adj. doing than doing sth …要求词性或结构上相一致的疑问

...。…6. McCarthy, though I liked him, gave me the impression he'd rather be home reading St. Thomas Aquinas than going into a tar-paper shack to see how poor people lived or flying halfway around the world to speak against racism. (B. Clinton, My Life)  尽管我喜欢麦卡锡，但他给我的...

问题 被动语态 句子成分

Grammar must be pointed out to be rather crucial in the examination of postgraduates.这个句子中to be rather crucial做什么成分? to be可以去掉吗?

问题 句子分析：It's fashion that Harvey Nichols does better than the rest.

此句对宾语fashion进行强调，that后引导的从句，是否理解为同位语从句？

问题 be of good quality的理解(of可以省略吗)

Some bags are of good quality.为何不能用Some bags are good quality？sth is good quality这种用法在写作也比较常见。是省略了of吗？

问题 There'll be an endless sea, of us rising up的语法结构

There'll be an endless sea, of us rising up.请问其中的 of us rising up 是什么用法，跟前一分句的语法结构是什么？

问题 这里为什么用them而不是it

有一道题:I like this pair of shoes.Could I try ___ on,please?A.it B.ones C.that D.them答案给的是D选项. 这个选项对吗?对我来说it 和them都是可以接受的.it指代this pair, them指代shoes.所以就有点糊涂了.为什么只能用it或者只能用them?

问题 It 和only的用法

But maybe it is only people like us. 请问only和it在这里是什么用法？

问题 《小王子》第八章一段话中的时态的问题

...they were a trouble to nobody. One morning they would appear in the grass, and by night they would have faded peacefully away. But one day, from a seed blown from no one knew where, a new flower had come up; and the little prince had watched very closely over this small sprout which was not like any...

问题 Did he but know it是什么结构

It was a dangerous excursion, did he but know it, for its headquarters was the focus of the ‘military resistance’ which would strike against him in July 1944.请教一下各位老师，看到国外论坛说这个结构的意思等于"if he only knew it".那么did he but know it 是否是if省略...

问题 be of...size用法中介词of的省略问题

The documents are stored in files that are (of) non-standard size. 文件保存在非标准尺寸的文件夹里。请问这句中的介词 of 用还是不用？有何区别？谢谢您！