do,did与is,was提问j时的区别是什么?

do,did与is,was提问j时的区别是什么? Is/Are supposed to do 与Was/Were supposed to do 的区别是什么?具体用法? do和is的区别是什么【开头提问】 was、were与did用法的区别 DO .IS ...过去式是Did.was.还是Did.is.? DO .IS ...过去式是Did...was...还是Did...is... It is adj to do与doing的区别是什么? do、does、did与be动词的用法区别. did does do的区别 did do和dose do的区别 What did he do yesterday.和what did he does yesterday.的区别是什么! do did does was的用法