1.Bind the sack before it be full.
做事应适可而止。

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

3.Bitter pills may have wholesome effects.
良药苦口利于病。

4.Between the cup and the lip a morsel may slip.
功亏一篑。

5.Between two stools one falls to the ground.
脚踏两头要落空。

6.Beware beginnings.
慎始为上。

7.Big mouthfuls often choke.
贪多嚼不烂。

8.Better an empty purse than an empty head.
宁可钱袋瘪，不要脑袋空。

9.Better an open enemy than a false friend.
明枪易躲，暗箭难防。

10.Birth is much, but breeding is more.
出身固然重要，教养更且重要。

11.Bite off more than one can chew.
贪多咽不下。

12.Blood is thicker than water.
血浓于水。

13.Burn not your house to rid it of the mouse.
投鼠忌器。

14.Burnt child dreads the fire.
一朝被蛇咬，十年怕井绳。

15.Bring up a raven and he'll pick out your eyes.
养虎贻患。

16.Bite the hand that feeds one.
恩将仇报。

17.​Better good neighbor near than relations far away.
远亲不如近邻。

18.Blind men can judge no colors.
不宜问道於盲。

19.Bread is the staff of life.
民以食为天。

20.Brevity is the soul of wit.
言以简洁为贵。