back and forth 来回，往返，来来往往地
base on/upon 以…为基础，把…基于
be aware of 知道
be bound to do 一定…，必然…
be busy with 忙于…
be capable of 有能力
be caught up in 对…感兴趣
be composed of 由…组成
be content with 对…满足
be curious about 好奇
be determined to do sth. 决心做某事
be devoted to 对…献身
be different from 与…不同
be entitled to 有资格，有…权利
be faces with 面对
be familiar to sb. 熟悉
be familiar with sth. 通晓
be famous for 因…出名
be fed up with 对…及其厌倦
be fond of 喜爱
be full of 充满
be good at 擅长于
be good for 有效，适用，胜任
be guilty of 有罪的；负疚的
be hard on 过分严厉的对待某人
be harmful to 对…有害
be innocent of 无罪的
be jealous of 嫉妒
be known as 以…知名，被认为是
be known for 因…著名
be liable to 易于…
be opposite to 和…相反
be patient with 有耐心
be proud of 因…感到自豪
be related to 与…有关
be responsible for 对…负责
be sensitive to 敏感
be shocked at 对…感到震惊
be short of 缺少
be sick of 厌倦
be similar to 与…相似
be sure of 确信
be tired of 厌倦，厌烦
be true of 符合于，对…使用
be true to 忠实于
be typical of 典型的
be used to 习惯于
because of 因为
before long 不久以后
begin with 从…开始
believe in 信任
blow one's top 大发脾气
break down （机器，车辆）坏了，感情崩溃
break in 强行进入，闯入，打断，插嘴
break off 突然停止，中断（谈判），谢绝，结束友谊或爱情
break out 爆发，使逃脱，使逃走
break through 突破…，冲破…
break up 结束（会议），（学校）放假
bring about 引起…；导致…；产生…
bring back 恢复
bring down 减少，减低
bring forward 提出
bring out 出版，推出，使显露
bring up 抚养，养育，教育
bring together 使相聚
brush aside 不理，漠视
build on/upon 以…为基础，依赖
build up 逐步建立，增强
burn out 烧掉
burn up 烧尽
burst into 突然开始；爆发
butterflies in the stomach 忐忑不安
by and by 不久以后，将来
by chance 偶然，碰巧
by far …得多，尤其，显然地
by hand 用手
by heart 牢记，凭记忆
by means of 用，凭借
by one's estimate 据某人估计
by oneself 单独，独自的
by the way 顺便一下，另外
