定语从句中关系代词做主语到底可以省略吗

问题描述:

定语从句中关系代词做主语到底可以省略吗
Do you know the teacher who will teach us English next term?
=Do you know the teacher to teach us English next term?
是为什么啊

第一个句子是定语从句.who will teach us .修饰 the teacher
第二个句子 to teach ...是不定式做定语,修饰the teacher