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问题 have fun doing sth中的doing是什么成分

请问专家，下面句子中的现在分词是什么成分？The children had so much fun throwing stones down into the river.They had fun trying to guess who your new girlfriend was. 

问题 介词加关系代词的用法问题

Excitement deprived me of all power of utterance ,in which case I would but stand there, nodding and waving.介词加关系代词；in which case，which 作定语修饰名词 case，case 作 in 的宾语; in which case 是定语从句的状语。这样理解可以吗？

问题 with独立主格结构的问题

The 'white bike' is back in town with a computer chip to record its every move this time.With my work finished, I read some newspaper and magazines.这两句话中with+....都是独立主格结构吗？在句子中做什么成分呢？

问题 if从句用否定式

I shall speak to Professor Dumbledore and see if we can't bend the first-year rule.这个句子说的通，但是我不能理解为什么这里用can't而不用can，明明否定更复杂一点不是吗，这种表达是一种习惯还是有什么含义？

问题 I wish I could, but I don't want to是什么意思

别人请一个人帮忙。她回答：I wish I could, but I don't want to.请问这是什么意思？

问题 句子成分：They have different opinions on this question

on this question在句中做什么成分？状语吗? 但是我看了状语的八九种用途, 好像没有一个符合的。

问题 He complained about having been kept waiting 分析

我理解因为complain不及物，所以需要加about，那么about后面的动名词的完成式的被动式作什么句子成分呢？其中的waiting又是什么成分？该如何理解呢？还请老师赐教，谢谢老师！

问题 we have easy access to smart memory networks句子成分分析

如题

问题 一般现在时与一般过去时的用法疑问

I can't believe the news that my father is involved in the crime.这里 is involved in 为何不用过去式，已经参与了，不相信之前已经发生了，不知道为何一般现在时？

问题 so可以放在哪些动词前起修饰作用

It so happened that I’d met her a few years before. 碰巧我几年前见过她。句子中的 so 是修饰动词 happened 的吗？so 在此是什么意思？还有哪些情况可以像这样用 so 放在动词之前起修饰作用？谢谢！

问题 宾语从句引导词问题

Gross MarginGross margin is the percentage difference between what a product sells for in the market and what it costs to produce that product.what it costs为什么不写成how much it costs?

问题 句子成分

...nisms breed and grow.句子成分是，主 系 表 比较状语(介词that引导) 定语从句，那老师no deeper在句中做什么成分，我觉得根据翻译应该是定语，但是既然是定语应该放在shallow waters前面才对，所以很困惑

问题 难句分析

Illustrated with an entertaining array of examples from both high and low culture,the trend that Mr.McWhorter's documents is unmistakable. But it is less clear, to take the question of his subtitle, why we should, like, care.红色部分的句子该如何分析呢？

问题 请问这个这个句子省略了什么词

We’ll focus on some issues related to technology and society.issues和related之间是省略that吗？省略理由是什么？

问题 这是个什么句子？怎么分析这个句子的成分？

It is amazing how closely they resemble each other.