直接引语变间接引语 虚拟语气 急~~

Question

a. 间接引语中虚拟语气动词时态不必改变：

1）当原话动词是虚拟式时,

--“Have another apple.” Carol suggested to me.

--Carol suggested that I should have (BrE) another apple.

--“We insisted that he leave at once,” she said.

--She said that they (had) insisted that he leave at once.

--“If you were to come tomorrow. I might have time to see you,” he said.

--He said that if I were to come then next day, he might have time to see me
b. 间接引语虚拟语气和语气动词时态改变：

过去虚拟语气或假设过去时推移到过去完成时，例如：

--“If he were here, he would vote for the motion,” she said.

--She said that if he had been there, he would have voted for the motion.

--“If she stayed another day, he would drive her home,” he said.

--He told me that if she had stayed another day, he would have driven her home.

这两个有什么不同？虚拟语气到底怎么变？

Answer 1

这是根据时态变的，有规定
现在时-过去时
现在进行时-过去进行时
过去时-过去完成时
过去进行时-过去完成进行时
现在完成时-过去完成时，而过去完成时是不可以变时态的了，其实就是所有时态都往past推
-“If he were here, he would vote for the motion,” she said.
--She said that if he had been there, he would have voted for the motion.
这里是过去式，所以就变成过去完成时。独立分句变为have voted是因为前面用了情态动词would，所以had 变为动词原形