关于in which.语法高手请进.这句话： He had at last been allowed to send a fax in which he informed the edior that he had been arrested.请问这句话里面 定于从句引导词 which前面为什么要加 in 呢?请问这是什么语法

关于in which.语法高手请进.这句话： He had at last been allowed to send a fax in which he informed the edior that he had been arrested.请问这句话里面 定于从句引导词 which前面为什么要加 in 呢?请问这是什么语法
关于in which.语法高手请进.
这句话： He had at last been allowed to send a fax in which he informed the edior that he had been arrested.
请问这句话里面 定于从句引导词 which前面为什么要加 in 呢?
请问这是什么语法现象? 什么时候 引导词前面要加介词呢? 请详细说明并举例子? 谢谢~!
可酌情加分哦~!一定要解释详细些.

关于in which.语法高手请进.这句话： He had at last been allowed to send a fax in which he informed the edior that he had been arrested.请问这句话里面 定于从句引导词 which前面为什么要加 in 呢?请问这是什么语法
翻译：最终他被允许可以发一份传真来告诉编辑他已经被捕了.
用IN主要是要看从句中的意思,WHICH这里指代的是FAX里讲的内容,如果把WHICH 去掉,我们可以看从句如下：
in the fax he informed the editor that he had been arrested.
这里用 IN主要是指代的是FAX的内容,比如我们常说in the news paper-新闻报纸里报道.--而不用其他的介词搭配.《这里一般会让人联想到另外一个语法的：IN THE PAPER(指纸里面写的内容） 和 ON THE PAPER （指放在纸上面的东西）的区别》
这类由IN WHICH,ON WHICH,BY WHICH从句的搭配关系,主要是要看从句的谓语和介词的搭配,或状语里的介词和名词搭配.
其实我觉得所有的从句,无论是主语从句,定语从句,宾语从句还是状语从句,其实都是一样的,主要是从句在主句里的位置不同而叫法不同而已.从句跟主句之间的介代词搭配主要还是看从句.有的复杂的句子有好几个从句,其实做法也简单,把他们按不同的从句分开,然后再逐一分析,解决起来也就容易多了.
以上是我的理解,

in which 就是where，意思就是说在这封邮件里他说他被逮捕了。很简单啊。
for example I had a dinner at KFC in which (where) i spent 20 yuan.

这个句子是定语从句。
首先明白定语从句的概念，定语从句有可能去掉（介词+）先行词之后是一个完整的句子，但是意义不完整，与主句扯不上任何关系了。
he informed the edior that he had been arrested。是一个的句子，但是却与fax没有了任何关系。
若要与之发生关系，则
he informed the edior that he ...

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这个句子是定语从句。
首先明白定语从句的概念，定语从句有可能去掉（介词+）先行词之后是一个完整的句子，但是意义不完整，与主句扯不上任何关系了。
he informed the edior that he had been arrested。是一个的句子，但是却与fax没有了任何关系。
若要与之发生关系，则
he informed the edior that he had been arrested in a fax（在一封传真中）.a fax是先行词，用which代替同时in也要提前（如果没有in的话这个句子是不是不完整了啊he informed the edior that he had been arrested a fax，这就是一个错句）。这里的in不就是在....里面吗。
例句：
This is the river in which he can swim.

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in which 属于定语从句中关系词的一类，介词+关系词。其中的介词与句中其他成分有一定的逻辑关系，所以不能省略。
看怎么变化的：
He lives in a city.The city is far away.
→The city he lives in is far away.
→The city in which he lives is far away.<...

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in which 属于定语从句中关系词的一类，介词+关系词。其中的介词与句中其他成分有一定的逻辑关系，所以不能省略。
看怎么变化的：
He lives in a city.The city is far away.
→The city he lives in is far away.
→The city in which he lives is far away.
同样的,a fax in which he informed the edior that he had been arrested
还原之后就是 he informed the edior that he had been arrested in the fax。
因为是在传真中，所以in不能省，这样就比较好理解了。

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