为什么claim to have done可以,而say to have done不可以?

have done/to be done should have done 可以换成 ought to have done嘛? claim to have done sth 是声称做过某事 可是to do 和 to have done 有什么区别? have done to to have done meant to have done to have done , having done 选哪个?为什么? done,tobe done,to have been done,to have done,having done,ha have been done 和 to be done were to have done 造句, the 序数词 to have done 不定式 to have done 举例