问一句英文的语法问题，关于定语从句

Question

and the manner in which the expatriates conceal themselves from reality was no less dangerous.这句话中的in which的定语从句中 这个in 应该是哪里的？ 请详细解答一下 定语从句中的 介词+which的用法，谢谢~不用复制的哦~

Answer 1

定语从句还原：the expatriates conceal themselves from reality in a manner.
主句：the manner was no less dangerous.

当先行词作从句的壮语时，往往就会有介词，而这个介词可以留在从句里，也可以把它提前到先行词的前面、引导词的后面。当介词提前，有时候介词可与引导词合并成一个关系副词。
例：the village which she spent her childhood in is very beautiful.
the village in which she spent her childhood is very beautiful.
the village where she spent her childhood is very beautiful.
以上三句意思相同，语法都正确，其中用于书面语的、比较正式的说法是后两句。

追问

嗯 可还是不太明白 到底什么时候这介词要放前去。 什么不放 是为什么要放呢？

追答

当先行词作从句的状语的时候，通常是时间状语、地点状语、方式状语等。