如果發(fā)生在將來,比如你要跟別人定個日期
please hand in your homework in three days. 請在三天后（也就是大后天）把作業(yè)交上來
同樣是發(fā)生在將來：
how much time do we have to finish it? 我們又多少時間完成它?
It's only three days from today. 姶今天算起僅有三天.
對發(fā)生在過去的事進(jìn)行講述：
three days later, he broke up with her. 三天后,他和她分手了.三種不同時的用法能舉例說明下嗎？重點(diǎn)就是發(fā)生了沒please hand in your homework in three days. 請在三天后（也就是大后天）把作業(yè)交上來（尚未上交）而three days later, he handed in his homework. 三天后，他上交了作業(yè)（已上交）。