直接引语变间接引语

问题描述:

直接引语变间接引语
She said:"I was shopping when the UFO arrived."怎么变间接引语
是变成She said that she was shopping when the UFO had arrived.
还是She said that she was shopping when the UFO arrived.
为什么?

此题应该是:She said that she was shopping when the UFO arrived.
如果直接引语中含有since,when,while 引导的表示过去时间的状语从句,在变为间接引语时,只改变主句中的谓语动词,从句的一般过去时则不变.如:
He said to me,"I have taught English since he came here ."
→He told me that he had taught English since he came here.