21、A little knowledge is a dangerous thing. 一知半解，害已误人。

22、A man is never too old to learn. 活到老，学到老。

23、A thousand mile trip begins with one step. 千里之行，始于足下。

24、Look before you leap.三思而后行。

25、All that glitters is not gold.闪闪发光的并不一定都是金子。

26、An apple a day keeps the doctor away. 一天一个苹果，医生不来找我。

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

28、As a man sows, so shall he reap. 种瓜得瓜，种豆得豆。

29、Be swift to hear, slow to speak. 多听少说。

30、Better late than never. 迟到总比不到强。

31、Birds of a feather flock together. 物以类聚，人以群分。

32、Blood is thicker than water. 血浓于水。

33、Business before pleasure. 先工作，后娱乐。

34、By learning you will teach, by teaching you will learn. 教学相长。

35、Diligence is the mother of success. 成功来自勤奋。

36、Do as the Romans do. 入乡随俗。

37、All roads lead to Rome.条条大路通罗马。

38、Every man has his weak side.人人都有弱点。

39、Every potter praises his pot.王婆卖瓜，自卖自夸。

40、Failure is the mother of success.失败是成功之母。