定语从句的谓语动词不必和主句的谓语动词在时态上有什么一致的问题,根据每句中发生的动作或存在的状态的时间而定,比如：
I visited the house Chairman Mao had lived in.
The man I spoke to is my uncle.
The boy who is brave passed the examination.
I know the the man he was talking to just now.
而宾语从句中的谓语动词要和主句的谓语动词在时态上保持一致.