She said that she read the book while she was waiting for a bus
剛才那個“He said they were still students.”少打了個That,抱歉,He said that...為什么不是She said that she read the book while she had waiting for a bus 呢?這個read和waiting for a bus是同時進行的動作，如果改成had waiting那么等車這個動作就在看書之前發(fā)生了，就不對了哦不好意思剛剛我在read前面少打了個had應該是這樣:She said that she had read the book while she had waiting for a bus 那么這樣可以么?(PS一句:在這里that可以省^_^)一般情況下，轉換的時候應該是過去式變?yōu)檫^去完成時，但這個句子中有個while，was doing sth. while sb. was doing sth.是一個句式（另，was waiting改為過去完成時是had been waiting）所以我認為，這里面不用改變時態(tài)，直接用過去式就好有些時候轉換的時候是不用改時態(tài)的