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问题 while doing 的用法疑问

请问老师while在这里是什么用法？Its Intelligent Transport System tells drivers when roads are crowded, while changing traffic lights and planning alternative routes that drivers can follow.

问题 of doing结构能否看作是从句的简化

...她以她惯用的办法推说没有时间。请问这两个句子中的of doing 结构能否看作是定语从句的简化，如果可以，这两个定语从句简化以前是什么样子呢？

问题 能否去掉do not，在seem后加not，而句子含义不发生改变呢？

Certainly people do not seem less interested in success and its signs now than formerly.当然，现在人们对成功及其标志的兴趣与以前相比似乎丝毫未减。请问上述句子能否去掉do not，在seem后加not，而句子含义不发生改变呢？就是变成这样：Certainly ...

问题 spellbound是形容词还是过去分词

She held him spellbound.句中spellbound是不是形容词？是形容词还是过去分词？

问题 单个形容词位置问题

You will be liable for any damage caused.这句话中的单个形容词caused放在被修饰词damage之后，单个形容词不是放在被修饰的名词之前吗？caused放在damage之前是否可以？

问题 这句子的back是形容词还是副词

(1)We're back where we started.back在这里是形容词吗? 其后的从句是形容词的宾语从句?(2)Can I have my hat back?这里"使帽子回来",back是形容词作宾补吗?

问题 keep doing 与 keep having done的用法与区别

英语肯定是可以说 keep doing sth 的，比如：The baby kept crying for an hour.但是，英语可否说 keep having done sth 呢？比如：The baby kept having cried for an hour.

问题 wait for sb to do sth句型解析

老师好，在 wait for sb to do sth 这个句型中， 不定式是否是做sb的补语？如： We have to wait for him to come.I can’t wait for them to finish talking. 

问题 as most people do的as的词性和意思

原句是I don't want to set down a series of fasts in a diary as most people do.as的词性和意思是什么？是连词：依照，还是介词：如同，还是副词：和什么一样？

问题 形容词分析

...is now high on the boss’s agenda in businesses of every variety.这里的形容词为什么要用逗号呢？是因为都是观点（主观）形容词嘛？如果是的话意思就是用多个观点形容词都要用逗号隔开吗？

问题 to do用法是否正确

有这么一个句子，This is a remarkable technology development to satisfy the growing demand of pretrochemicals.这个句子对吗？如果正确，to statisfy 是做定语吗？如果不正确，该怎么改比较好呢？

问题 be done doing sth的用法

I am done trying, 请问done的使用？为什么不是 I have done trying?

问题 can not help but do的意思

Wasn't I tempting fate: how could these hard-nosed Nazi detectives help but smell out the diaries beneath my broadcasts?can not help but do意思是不可避免、情不自禁的做.....但是这里变成特殊疑问句，没有了can not 还是那个意思吗？翻译句子有点乱了!

问题 can't help to do（to可以省略吗）

请问老师，can't help to do， to可以省略吗？ I can't help you to finish your job. I can't help to finish your job.

问题 doing做状语时和前面的主句用不用逗号隔开

doing做状语时，和前面的主句用不用逗号隔开？或者有没有逗号，是不是不一样的含义？She came running towards me.The children ran out of the room, laughing and talking merrily.一个有逗号，一个没逗号，意义有区别吗？谢谢!