刚回答了一道问题,可以用来解释：
1.Is this factory __________ some foreign friends visited last Friday?
A.that B.where C.which D.the one
2.Is this the factory __________ he worked ten years ago?
A.that B.where C.which D.the one
答案及解释：
第1,2题是典型的定语从句区别题,介意将其变为陈述句看：
1.This factory is __________ some foreign friends visited last Friday
很明显,主句为：This factory is __________.从句为some foreign friends visited the factory last Friday.主句缺少表语,横线上应加上先行词the one,整句变为：This factory is the one (that/which) some foreign friends visited last Friday.故选D
2.This is the factory __________ he worked ten years ago.
主句为This is the factory.(与上句不同,此句完整）,从句为he worked in the factory ten years ago.横线上应填in which=where,故选B.
平时跟学生就是这样解释的,不知有没有听懂.
