请问，What makes his headmaster unsatisfied with him is he often breaks the school rules.这个句子为何不可以再用It is .....that 强调。强调的话不就是 A： It is he often breaks the school rules that What makes his headmaster unsatisfied with him is 不就好了吗。或者B ：It is What makes his headmaster
unsatisfied with him that he often breaks the school rules is。在B里that后面有两个谓语动词，这是不成立的吧。但A呢，为何A不可以？另外。What makes his headmaster unsatisfied with him is he often breaks the school rules.这句话到底是主语从句还是表语从句，还是主语从句里包括了一个表语从句。感谢老师们。
What makes his headmaster unsatisfied with him是主语从句； is 是系动词； he often breaks the school rules是表语从句。
