Tell me the reason why you were sleeping in class. =Tell me the reason for which you were sleeping in class.
关系副词和先行词的关系
I still remember the day when I came here. on the day =when
关系副词实际上是介词+先行词
几种易混的情况
1.I’ll never forget the days__w_h_e_n__/i_n_w__h_ic_h_ we worked together.
2.I’ll never forget the days ___w__h_ic_h____ we spent together.
4)若主句中有疑问代词 who, which 为了 避免重复, 关系代词不要再用who, which.
只能用which(表示物)的情况
1. 介词后面 The room in which there was a lot of money was broken into last night.
2. 非限制性定语从句
as 引导的限制性定语从句
Please complete the following sentences and compare:
This is such an interesting book _a_s__ we all like. This is so interesting a book ___a_s_ we all like.
3.关系副词when, where, why
as 1. the same…as
2. such+n.+ as