what did you say?为什么要用did

---What did you say? What did you say? What did she say?为什么要加did 英语翻译【What Did You Say】What did you say,say it again,why did what did he say? what did he tell you? Did you hear what I_(say)横线上填said,请问为什么用过去式? 问题"what did you say just now?"答案为什么用“I asked how Iopen the d What do you say? What did you say? What did you said? What did he say? What did Jim say? What did your boss say to him 中为什么不用do而用did? what are you saying?what did you say?的区别