back down 放弃，让步，退却
back out of 收回(诺言等)
be addicted to 沉溺于；使吸毒成瘾
be alive to 对…敏感，觉察，关心
be beneficial to 有利于，有益于
be better off 境况富裕；更富有
be blind to 不了解，对…是盲目的
be bound for 准备到…去；开往
be careful of 当心…对…仔细
be careful with 照顾；对…过细地
be cautious of 留心…，谨防…
be charitable to 对…慈善
be civil to 对…有礼貌，对…谦恭
be clear about 对…明白，对…明确
be comparable to 比得上…
be comparable with 与…可比较的
be composed of... 由…组成
be considerate of 体谅…，替…着想
be disagreeable to 不合…意；对…发脾气
be disgusted with 讨厌…，厌恶…
be eager for sth. 渴求某事物
be envious of 羡慕(或忌妒)
be essential to 对…不可缺少
be familiar to 为…所熟悉
be familiar with 对…熟悉
be favourable to 赞成…
be fed up with 对…感到厌烦，腻了
be generous in 乐于…
be generous with 用…很大方
be good to 对…好；对…很慈善
be hard up for 缺钱，手头紧
be jealous of 嫉妒…
be keen on 喜爱，爱好；渴望
be married to sb. 和…结婚
be noted as 以…而闻名
be occupied in 忙于…，正从事…
be off one's head 神经错乱，神志不清
be on a diet 节食
be responsible to sb. 向…负责
be superior to 比…更优越
be to blame for 对…应负责任
be up to 该由…负责；胜任
be worth doing 值得(做)
bear down 压倒，击败，克服
bear down on 冲向；对…施加压力
bear off 赢得；使离开；驶离
bear up 支持，拥护；打起精神
beyond dispute 没有争论余地的
blow over 被淡忘
blow up 发脾气；放大(照片等)
bomb out 把(地方等)炸毁
break in on 打扰；打断
break out into 长出(嫩芽等)；迸发出
break up 分裂，分解；解散
bring forth 使产生；生(孩子)
bring forward 使涌现出
bring off 救出；成功地做某事
bring on 引导，导致；使发展
bring over 把…带来；使某人转变
bring under 镇压；压制；使就范
bring...into contact 使…和…接触
brush off 刷去；掸去；拂去
brush up 擦亮；重新学习；复习
burn down 把…夷为平地
burn oneself out (因过劳而)筋疲力尽
burst into 闯入；突然发作
burst up 爆炸；失败；突然发怒
burst upon 突然来到
buy out 出钱使(某人)放弃地位
buy up 全买；尽可能买进
by leaps and bounds 飞速地，突飞猛进地
by the moment 到那时候