which 引导定语从句时什么时候在前面加介词啊?
问题描述：
which 引导定语从句时什么时候在前面加介词啊?
答
只要看which从句所修饰的那个中心语放入从句中时，其前面是否需要用到介词。
eg. 1.I like the cakes which you bought on the way home.
which从句修饰的中心语“cakes” 与从句中的动词“buy” 可以直接搭配使用，buy cakes，
you bought cakes on the way home. 所以此处无需用介词；
2. I like the new pencil with which you wrote a letter just now.
中心语“pencil” 带入从句：you wrote a letter with a new pencil. 此时，which前也就相应的用上介词“with”
答
作宾语的时候。
答
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.你可能觉得...