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问题 When引导的从句的句子改写

...Being agreed finally to buy chicks by their parents ?若可以那when引导从句和这个过去分词，为什么可以互相转换若不可以，句子还可以怎么改写？还有就是这个句子，when引导的从句内容可否用表原因的词来引导？

问题 定语从句中的关系副词 when、where、why是否可以省略

语法书上好像没有提到。From the time Zhang Qian opened up the world-famous Silk Road during the Han Dynasty, until the collapse of the Yuan Dynasty, it enjoyed a history of about 1,600 years.这个句子里面的 time 后面是不是省略了 when 呢？    

问题 非限制性定语从句用that引导

This last fact, that that is obligatory, should be easy to remember.请问这里的为什么用 that 引导非限制性定语从句？另外，为什么这里有两个 that？

问题 It is time that...还是It is 

刚才提了一个问题“It’s time that you went to bed中的it是形式主语吗”，突然想到另一个问题，就是这个It’s time后面的从句通常是用that来引导吧！它也可以用when来引导吗？

问题 when可以引导所谓时间宾语从句吗？

... in the interests of a child.我感觉，本句的宾语是when引导的是从句，可是这样的话就成为时间宾语从句，好像没这种说法啊？况且语义也不顺。请老师讲解一下本句吧？谢谢老师，让您见笑了。

问题 when引导时间状语从句时主句能否用将来完成时

When he comes to my house tomorrow, I will be typing the letter.当他明天来我家时，我将正在打信件如果改成 When he comes to my house tomorrow, I will have typed the letter.是否可以？为什么？

问题 关于when引导的时间状语从句

When I did my homework,my father came back.这个句子对吗？ 前面的did，，，一定要改成was doing吗？When I lived in the countryside,I worked for a newspaper.这样可以吗？when 的主从句时态，有什么规律吗？老师可以给我讲一下吗？

问题 about which...引导定语从句的疑问

下面这句摘自高中英语新教材人教版必修一 p2：Amy is talking to Ms Li, a school adviser, about which courses to choose.请问这里的 about which 在此是此导定语从句吗？为什么用 which 呢？它的先行词 adviser 不是指人吗？

问题 引导定语从句用two of whom还是of whom two

He had three children, two of whom went abroad.He had three children, of whom two went abroad.上面两对都对吗？有区别吗？

问题 定语从句用法疑问

They will then vote on whether to ask for an extension past March 29th, which is when Britain is due to leave the EU.请问这个句子后面的定语从句要这样用？直接用when……不行吗

问题 that可以引导非限定性定语从句吗

First, she had to find a vehicle large enough to stand in, that was mechanically sound as well as easy to drive and park. 这里不应该用which吗？

问题 定从中几个特殊先行词后关系副词的选用

1.stage做定语从句的先行词时，当“时期，阶段”讲时后用关系副词when，“舞台”时用关系副词where吗？它的其他释义哪些后用when哪些用where？2.occasion做定语从句的先行词时当"时机"意时用关系副词when,“特别的事情(或仪式、庆...

问题 as many times as引导的是让步状语从句吗

请问老师：Mon always added that, as many times as I zoomed across the lawn after that, I never again crashed into that tree. 这句话里的as many times as引导的是让步状语从句吗？感谢！

问题 这里的As感觉像关系副词When的作用，As不是只能做关系代词吗？这里怎么理解？

Until such time as mankind has the sense to lower its population to the point where the planet can provide a comfortable support for all ,people will have to accept more unnatural food.

问题 宾语从句可以用"介词+which"引导吗？

各位老师好，请教下这个问题。我知道在定语从句中，有“介词+which”这一结构做引导词。我想问下宾语从句中也有“介词+which”吗？  如:I dont know in which city he was born.  我这句话，用“in whi...