he know what I said中 said必须是过去时吗,什么时候用say

he know what I said中 said必须是过去时吗,什么时候用say I don't know what he said中said是过去式还是过分 The invitation said "wear what you want".为什么用过去时said而不是say That teacher say she don't know what i said what i said =___ What did he say?-He said What did Mike say?He said _______________. what did he say that he would do?中said要还原成say,那么would 要还原吗,为 I'm sure of what he said.其中what he said是不是句子?是宾语从句吗? say的过去时是不是said? 1.I don't know what you say/said .那个好. ____________ from what he said, I’d say he would be in the r I know what you said is true.