which引导定语从句时什么时候在前面加介词?
当定语从句中的which是做介词的宾语,就要在which前加介词。举个例子,This is the city which I lived in.或 This is the city in which I lived.在这个从句中,which就是做介词in 的宾语,所以前面一定有in。
哪些介词加which可以引导非限定性定语从句?
所有搭配合理的都可以,包括in, on, at, about, of, over, around, beyond, between, from, to, into, out of, outside, inside, onto, by, among, with, under, above,through。
一、非限制性定语从句.介词的使用方法
在定语从句中,一般有两种情况会在关系代词前出现介词:
1、与先行词有关的介词可以放到关系代词前,如:
I won"t forget the days in which we worked together.(因为in the days,所以 in which)
2、与定语从句中的谓语动词相关的介词会放到关系代词前,如:
The boy about whom they often talk is very kind.(因为talk about,所以about whom )
注:第二种情况是完全可以将介词放到原有的位置(定语从句的谓语动词后),这时关系的范围就大了很多,如The boy whom/who/that/不填 they often talk about is very kind.
如果介词在关系代词前,关系代词要么是which(先行词是物),要么是whom(先行词是人).