以上是详细用法,你不懂的话有通俗的
do 是助动词 帮助疑问,和否定句 .
I love you.I don't love you.Do you love me?
does 是单数第3人称的助动词
he loves you.He doesn't love you.Does he love you?
Does the dog run away?
Did 和do 基本用法一样,只是did 是do 的过去时态.
did you go to school yesterday?
看你水平了,不要两个都讲,只讲一个,不然会混乱(两个都对)
不懂再问