can you tell me who he is 能从从句的角度上解释一下吗为什么宾语从句先行词在从句中做什么成分是表

表语,其实宾从没有先行词,定语才有其实who,whom,whose很好分的如果后面是个动词,那肯定是who 比如：the man who is talking to my teacher is my father如果后面是个冠词/限定词+名词或者代词,那就是whom 比如：The man whom my(限定词） teacher is talking to is my father。或者The man whom the(冠词） lady is talking to is my father。如果后面是名词,多半是whose 比如：the man whose hair(这个名词前面没有冠词或其他限定词）is gray is my father。