1）定义：
如人称代词一致，反身代词的人称和数以及性要和它所指代的名词或代词一致。
2）反身代词的句法功能
反身代词可用作宾语、同位语、表语等。用作同位语时，主要用于加强被修饰词的语气，可紧放在被修饰名词后或句末。
如：
He himself was a doctor. (同位语)
=He was a doctor himself.
She is too young to look after herself. （宾语）
I dont blame you, I blame myself(宾语).
He cut himself when he was cooking. (宾语)
That poor boy was myself.（表语）
那个可怜的孩子就是我自己。
注意：反身代词用于 be, feel, seem, look 等后作表语表示身体或精神所处的状态。如：
Ill be myself again in no time. 我一会儿就会好的。
He doesnt feel himself today.他今天感觉身体不舒服
Im not quite myself these days. 我近来身体不大舒服。