1. Time flies.
时光易逝。
2.To him that does everything in its proper time,one day is worth three.
事事及时做，一日胜三日。
3.To save time is to lengthen life.
节省时间就是延长生命。
4.When an opportunity is neglected,it never comes back to you.
机不可失，时不再来；机会一过，永不再来。
5.Time tames the strongest grief.
时间能缓和极度的悲痛。
6.The day is short but the work is much.
工作多，光阴迫。
7.Never deter till tomorrow that which you can do today.
今日事须今日毕，切勿拖延到明天。
8.Happiness takes no account of time.
欢娱不惜时光逝。
9.Take time when time cometh,lest time steal away.
时来必须要趁时,不然时去无声息。
10.Have you somewhat to do tomorrow,do it today.
明天如有事，今天就去做。
11.Everything has its time and that time must be watched.
万物皆有时，时来不可失。
12.Work today,for you know not how much you may be hindered tomrrow.
今朝有事今朝做，明朝可能阻碍多。