1. be friends with對…...友好,與…...交上朋友
2. be absent from... 缺席,不在
3. by oneself 依靠自己
4. be accustomed to (=be in the habit of,be used to) 習慣于
5. be acquainted with (=to have knowledge of)了解,(=to have met socially) 熟悉
6. be ashamed of (=feel shame,guilt or sorrow because of sth done) 以…為羞恥
7. behind one’s back 背著某人(說壞話)
8. be based on/upon 基于
9. benefit (from) 受益,得到好處。
10. believe in (=have faith or trust in,consider sth/sb to be true) 相信,依賴,信仰
11. beat...at 在…運動項目上打贏
12. begin with 以…開始。to begin with (=first of all) 首先,第一(經(jīng)常用于開始語)
13. by birth 在出生上,論出身,按血統(tǒng) at birth 在出生時,give birth to 出生
14. be busy with sth 于某事
15. be busy doing sth 忙于做某事
16. but for (=without) 要不是。表示假設
17. buy sth for...money 用多少錢買
18. be capable of 能夠,有能力
19. be capable of being + 過去分詞:是能夠被…...的
20. be cautious of 謹防
21. be certain of (=be sure of) 有把握,一定
22. by chance (= accidentally,by accident) 偶然
23. be common to sb 是與某人所共有的
24. by comparison 比較起來
25. be confident of 有信心