有没有I myself这种用法.

有这种用法.其中myself 作I的同位语.具体如下：
反身代词可作主语或宾语的同位语,起强调作用.如
He himself answered the question.(主语的同位语)
You may go and ask the teacher himself.(宾语的同位语)
注：反身代词作主语的同位语时,放在主语后或句尾都可以.如They themselves planted the trees.= They planted the trees themselves.