Not until i began to work (did i realize) how much time i had was_英语解答

Not until i began to work (did i realize) how much time i had wasted
为什么不用（have i realized）它们之间有什么区别

人气：455 ℃　时间：2019-08-22 13:32:17

解答

意思其实是一样的,区别不大
细微的区别是have是现在完成时,表示“现在”已经意识到,而did是过去时,表示过去工作时意识到.