they like to help each other.(对划线部分提问)_____ _____ they like ____ ___?

问题描述:

they like to help each other.(对划线部分提问)_____ _____ they like ____ ___?
help each other是划线部分

What do they like to do?
help each other是做like的宾语,即他们喜欢的对象,所以要用他们喜欢做什么提问
如果划线的是each other,就要问Who do the like to help?因为each otehr是帮助的对象