将直接引语变成间接引语什么时候用if什么时候用whether

问题描述:

将直接引语变成间接引语什么时候用if什么时候用whether

通常if whether都是可以的,
但是当句末有or…的时候一定要用whether.
比如:
He said he didn't know whether he would go or not.
I don't know whether I like apples or oranges.