he's really come out of his shell.这里为什么’s是has?

问题描述:

he's really come out of his shell.这里为什么’s是has?

只能是has,如果是is 的话,后面不能接动词come吧,这是一个现在完成时,因为come的变形比较特殊,所以你忽略了.在仔细看看.