eg.

Tell him which class you are in .

Do you know what he likes?

注：

(1)主、从句时态一致：

主句谓语过去时，从句相应过去时;

He answered that he was listening to me.

主句谓语现在时，从句时态任所需;

eg. He says (that) he will leave a message on my desk.

They know (that) he is working hard.

具体过去永不变，真理格言现在时;

eg.He told me that he was born in 1980.

Father told me that practice makes perfect .

(2)否定前移，及完成反意问句

在think / believe / suppose / guess / imagine / expect等动词后跟宾语从句否定式时，应转移到主句上去，完成反意问句时，应与从句主、谓保持一致。(注: 否定前移的条件是，主句主语是第一人称)

eg. I don't think you are right ,are you ?

I don't believe they have finished their work yet,have they ?

(3)运用虚拟语气的情况

在表示：

建议 suggest 、advise、propose;

要求demand 、desire、request;

决定 decide;

命令 order、command、require;

坚决主张 insist;

等动词后跟宾语从句，用(should)+v.(虚拟语气)