定语从句中的连词that,where,when的用法。答:1)when, where, why,how关系副词when, where, why,how的含义相当于"介词+ which"结构,因此常常和"介词+ which"结构交替使用,例如:There are occasions when (on which) one must yield.Beijing is the place where (in which) I was born.Is this the reason why (for which) he refused our offer?I...