请问,What makes his headmaster unsatisfied with him is (that) he often breaks the school rules.这个句子为什么不能再用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 不就行了吗。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。但是A呢,为什么A不行?另外。What makes his headmaster unsatisfied with him is (that) he often breaks the school rules.这句话到底是主语从句还是表语从句,还是主语从句里包含了一个表语从句。感谢老师们。