be off 离开

be on a visit from sp. 从某地来访问

be on a visit to sp. 正游览、参观某地

be on business 因公(办事等)

be on diet 节食

be on duty 值日、上班

be on fire 着火

be on holiday/vacation 在度假

be on sale 待售、拍卖

be on show 展览;上映

be on strike 罢工

be on the march 正在游行、正在行军

be out of fashion 过时、不流行

be out of order 没有秩序、乱

be out of reach ①够不着 ②无能为力

be out of work 失业

be popul ar among sb. 在……中流行，受欢迎

be popular with sb. 在……中流行，受欢迎

be prepared for 为……作准备(接抽象事物)

be present at (the meeting) 参加(会议)

be proud of 以……自豪

be put to a new use 被用在了新的用途上

be ready for 准备好做……

be ready to do 准备好做……

be recognised as 被认作是

be reduced by 降低了……(接数字、百分数)

be related to 与……有联系

be responsble for 为……负责任

be rich in 在……丰富

be satisfied with 对……满意

be senior to 比……大

be set in 以……为背景

be short of 缺少

be shown into sp. 被带到某地

be spun into thread 被纺成线

be strict in sth. 对某事严格要求

be strict with sb. 对某人严格要求

be successful in doing sth. 做……成功

be suitable for 适合

Be sure(certain) to do… 确信做某事(祈使句)

be tired from sth./doing (身体上)劳累、疲劳

be tired of sth./doing 厌倦……

be tired out 筋疲力尽

be to blame (应该)受责备

be to do 准备做……

be trapped by (the fire) 被(火)围困

be treated as 把……当作……对待

be under construction 建设中

be unwilling to do 不愿去做

be up to ①高达、达到 ②达到境界、进入角色 ③从事、忙于

be well received 接受效果好、广泛接受

be willing to do 盼望去做……

be worried about 为……担心

be worth doing 值得……

be worth sth. 值多少

be worthy of 值得

be/become known as 作为……而出名

be/become widely accepted 被广泛的接受

beat sb. black and blue 把某人打得鼻青脸肿

beat sb. on the head 碰某人的头

beat sb. to death 打死某人

beat sth. flat 把……压平

become a success (人或事情)成功

become se parated 分开

before all 尤其、特别

before long 没过多久(常用于将来时、过去时)

begin with 以……开始

believe in ①信赖、信任 ②信奉、信仰

belong to sb. 属于

benefit from 从……获取利益、好处

beyond reach 够不着;找不到、消失

beyond that 除了那个以外

beyond the sea 在海外

black out 昏迷、神志不清;停止、中断

black tea 红茶

blood bank 血站、血库

blow away 吹走

both of sb. 两个人都……

both…not… 不都是……(部分否定)