直接引语变间接引语方法（示例）：
He said,“It's a sunny day .”(直引)---He said it was a sunny day.(间引)
同理,"This sounds a good idea," he thought.改为间接引语应该是：He thought that sounded a good idea.
改的过程当中,两个地方要注意：1、指示代词this应改为that.2、引号里面句子的时态应和引号外面的主句时态保持一致,也就是把sounds改为过去式sounded,和主句当中的thought保持时态一致.