题目内容：

继续 She said,"I read the bokk while I was waiting for a bus."

优质解答

She said that she read the book while she was waiting for a bus
刚才那个“He said they were still students.”少打了个That,抱歉,He said that...

追问：

为什么不是 She said that she read the book while she had waiting for a bus 呢?

追答：

这个read和waiting for a bus是同时进行的动作，如果改成had waiting那么等车这个动作就在看书之前发生了，就不对了

追问：

哦 不好意思 刚刚我在read前面少打了个had 应该是这样: She said that she had read the book while she had waiting for a bus 那么这样可以么? (PS一句:在这里that可以省 ^_^)

追答：

一般情况下，转换的时候应该是过去式变为过去完成时， 但这个句子中有个while，was doing sth. while sb. was doing sth.是一个句式（另，was waiting改为过去完成时是had been waiting） 所以我认为，这里面不用改变时态，直接用过去式就好 有些时候转换的时候是不用改时态的