问题 see as many of our friends as we can是什么结构

初中九年级U10 3a课文中有一句话：We often just walk around the town center, seeing as many of our friends as we can.我不太明白as many of our friends as we can是个什么结构，我们目前只学过as+adj./adv.原级+as+其他的结构，但是 many of our friends 好像是个名...

问题 be proud to do sth与be proud of doing sth

We are proud to say this forum is the heart of our website.这是高中英语新教材译林版必修1第2单元的句子(p20)。请问这里的 proud to say 可以改成 proud of saying 吗？

问题 可以用one of the crowd表示“一群人中的一个”吗

crowd 表示“人群”，是个集合名词。如果要表示其中的一个人呢？如何表达？可以用 one of the crowd 来表示吗？

问题 除了名词和形容词外，还有什么词后可以跟of+名词结构？

动词和动词短语后可以跟of+名词结构吗？

问题 a lot of it is genetic. 介词后面加句子

There are much bigger contributors to our weight and a lot of it is genetic.介词+句子???

问题 of them表示“其中...”是否正确且地道?

...: Harvard has nurtured many outstanding statesmen, scientists and writers. Of them, six were American presidents and over thirty won Nobel Prize. 这样有无语法错误?是否地道?望老师们能帮忙解答

话题 many of them top tier universities

话题 that most valuable of economic assets

话题 That’s very kind of you

话题 It’s very kind of you

话题 The cambridge grammar of English language

话题 sevens inherent sins of human being

话题 issue with / issue for / issue of

话题 at the back of my refrigerator

话题 be proud of sb to do