1.Kill two birds with one stone.
一箭双雕。

2.A year's plan starts with spring.
一年之计在于春。

3.A bird in the hand is worth than two in the bush.
一鸟在手胜过双鸟在林。

4.Promise is debt.
一诺千金。

5.An hour in the morning is worth two in the evening.
一日之计在于晨。

6.An apple a day keeps the doctor away.
一天一苹果，不用请医生。

7.No man can do two things at once.
一心不可二用。

8.A man cannot spin and reel at the same time.
一心不能二用。

9.A word spoken is past recalling.
一言既出，驷马难追。

10.Cannot see the wood for the trees.
一叶障目，不见泰山。

11.A little knowledge is a dangerous thing.
一知半解，自欺欺人。

12.A bad thing never dies.
遗臭万年。

13.Good for good is natural, good for evil is manly.
以德报德是常理，以德报怨大丈夫。

14.An eye for an eye and a tooth for a tooth.
以眼还眼，以牙还牙。

15.Set a thief to catch a thief.
以贼捉贼。

16.He sets the fox to keep the geese.
引狼入室。

17.Great men have great faults.
英雄犯大错误。

18.Great minds think alike.
英雄所见略同。

19.Never say die.
永不言败。

20.No way is impossible to courage.
勇士面前无险路。