题目内容：

I don't know how to help him同义句
为什么是
I don't know how I can help him?

优质解答

I don't know 和 I have no idea是同义短句,所以可以改成 I have no idea how to help him.how to help him的意思是how do you help him=你怎样帮助他,用什么方法帮助他.how I can help him的意思是how can you help...