People can say everything they like

问题描述:

People can say everything they like
正确应该是
People can say what they like
请从语法的角度帮忙解释一下为什么一定要用WHAT?everything (that) they like

如果要用that,就必须用all that.all that=what.
这个是个宾语从句.人们可以说他们喜欢什么,喜欢是动词,后面跟宾语.所以用what.
或者是all that.