定语从句中有完成时 主句是一般现在时从句可用各种时态
I blieve that he has finish the work
I have finished all the work that you asked me to do. 主句现在完成，从句一般过去。
I finished all the work that you had asked me to do. 主句一般过去， 从句过去完
定语从句并没有固定的时态规律。主从句时态都要根据具体情况而定。
名词性从句中宾语从句注意时态的问题
（1）如果主句中的谓语动词是一般现在时，从句的谓语动词的时态可为各种时态
（2）如果主句的谓语动词是过去时态，从句的谓语动词动作发生在主句的动作之前，过去完成时、过去完成进行时或一般过去时。
The police found that the house had been broken into and a lot of things stolen.警察发现有人闯入房子并且很多东西被偷
She said she had been waiting for me for a long time.她说她等了我很长时间。
（3）如果主句的谓语动词是过去时态，从句的动作和主句的动作同时发生，则从句的动词用一般过去时或过去进行时。
I didn’t know you were here.我不知道你在这里。
I was told that they were designing a new machine.有人告诉我他们在设计一种新机器。
（4）如果主句的谓语动词是过去时态，从句的动作发生在主句的动作之后，则从句的动词用过去将来时、过去将来进行时或过去将来完成时。
We were all surprised when he made it clear that he would leave office soon.当他宣布他不久就要离职时，我们都很吃惊。
They said they would be listening to a report on current affairs.他说他们将听关于时事的报告。
I know (that) he studies English every day. （从句用一般现在时）
I know (that) he studied English last year. （从句用一般过去时）
I know (that) he will study English next year. （从句用一般将来时）
I know (that) he has studied English since 1998. （从句用现在完成时）
当主句动词是过去时态（could, would除外），从句则要用相应的过去时态，如一般过去时，过去进行时，过去将来时等；当从句表示的是客观真理，科学原理，自然现象，则从句仍用现在时态。
追问I have finished all the work that you asked me to do. 主句现在完成，从句一般过去。
I finished all the work that you had asked me to do. 主句一般过去， 从句过去完
亲，请问这两句子意思有何区别？
追答我已经完成了你告诉我做的工作
我做完了你之前告诉我的工作
两句话意思一样 只是主句的时态问题
亲 对于您的补充 不是因为大家想象力好 而是你问题之前就有问到其他名词性从句又如何 宾语从句属于名词性从句
来自：求助得到的回答