四级考试中，背会大量的词汇绝对是占优势的，所以，小编决定和小伙伴们一起来背单词，背词组！
字母B开头
back and forth(前后)来回地/往返
back away逐渐后退
back of在…的后面/在…背后
back up支持/援助/倒退
based on以…为基础
be able to能/会
be about to即将(做)
be absorbed in专心致力于…
be abundant in…富于/…丰富
be accustomed to习惯于
be acquainted with开始认识/了解
be adequate for适合
be alike to与…相同/与…相似
be all ears全神贯注地倾听着
be at the end到尽头/达限度
be at war处于交战状态
be attached to附属于/喜爱/爱慕
be attentive to对…关怀
be available for有效
be aware of知道/意识到/认识到
be bound to一定会…/必然…
be bound up in热心于/忙于
be bound up with与…有密切关系
be burned to a crisp烧脆
be busy with忙于…
be capable of有做出(某事)倾向的
be caught up in对…特别感兴趣
be certain of确信/肯定
be certain to do sth一定做…
be concerned with关心/挂念/从事于
be detached from把…从…上卸下
be equal to等于/相当于
be fed up吃得过饱/对…极厌倦
be fond of爱好
be friends with与…交友(友好)
be full of充满
be good at善于/擅长于
be hard on sb.过于严厉对待某人
be hard up短缺/在急需中
be ignorant of对…不知道(了解)
be in drink喝醉了
be in fashion(人、物)合于时尚
be in for参加(竞赛、考试等)
be in love with跟…恋爱
be in sympathy with赞同/同情
be in the habit of有…习惯或脾气
be in the wrong错/理亏
be inferior to(质量等)比…差
be keen about喜爱/对…着迷
be keen on喜爱/渴望
be known as以…知名/被认为是
be known for因…而众所周知
be known to为…所知
be located in位于…/坐落在…
be lost on对…不起作用
be loyal to忠于
be on the advance(物价)在上涨中
be on the drink常常喝酒/酗酒
be out for为图要/一心为
be out of employment失业
be out of style不合时式/不时髦
be qualified to能胜任…
be remarkable for以…而著称
be representative of代表…
be rid of摆脱/去掉
be satisfied with对…感到满意
be seated坐下/坐着/位于…
be short of缺乏/不足/达不到
be skilled in擅长
be subject to易受…的/惯患…的
be supposed to被期望/应该
be sure and...一定要…
be sure of oneself有自信心
be thick with充满/与(某人)很亲密
be to blame该受责备/应该负责
be typical of是…的特点
be up against面临(困难等)
be used to习惯于
be useful to对…有益
be very useful at精通
bear away夺得/赢得(奖品等)
bear in mind记住
bear on对…施加影响/有关
bear out证实/证明
bear sth. in mind记住(某事)
bear with宽容/耐心等待
beat down打倒/推翻/杀(价)
beat off击退/打退(进攻)
beat up and down来回奔走
before long不久以后
begin with以…开始/开始于
behind schedule落后于预定计划
believe in相信/信仰/主张
belong to属于/附属
bend one's knee to向··跪下/屈服
beside the point离题/不中肯
beside the question离题/和本题无关
best of all最(好)/首先
beyond control无法控制
beyond number多得数不清
beyond question毫无疑问/无可争辩
bit by bit一点一点地/渐渐
black and blue(被打得)遍体鳞伤
black out用墨涂掉/封锁(新闻)
blow off吹掉/将(热水等)放出
blow one's top 气急败坏/发脾气
blow out吹熄(灯火等)
blow over经过/(云等)吹散
blow up给(轮胎等)打气/爆炸
boast of吹牛/自夸/夸耀
border on接界/接近/非常像
born of源于/出生于
both...and...既…又…/不但…而且
break away突然离开/逃跑/脱身
break down打破/发生故障/中止
break faith背信/背弃信仰
break in训练/强行进入/打断
break into闯进/突然…起来
break into pieces(使)成为碎片
break off(使)折断/中断/断绝
break one's word失信/食言
break out(战争等)爆发/逃出
break the ice打破沉默
break through突破/冲垮/突围
break up打碎/(关系)破裂
breeze through轻松地做
bring about带来/使(船)掉过头来
bring back带回来/使恢复
bring down降低(温度等)/使倒下
bring forward提出(建议等)/显示
bring in收获(庄稼等)/生产
bring into action使行动起来
bring into effect实行/实现/实施
bring into operation实施/使生效
bring out使…显示出来/公布
bring through救活(病人)
bring to life使苏醒
bring to ruin使毁灭/使落空
bring together使…团结起来
bring up教育/提出(供讨论)
bring up the rear走在最后面
brush aside扫除(障碍等)/无视
build up树立/逐步建立/增大
burn out烧坏/烧尽/筋疲力尽
burn up(炉火等)烧旺起来
burst into laughter突然笑起来
burst out laughing突然笑起来
but for倘没有/要不是
button up扣/扣紧钮扣
buy off收买
buzz off(俚)急忙离去
by accident偶然
by air通过航空途径
by all means尽一切办法/一定
by all nerves高度不安/神经紧张
by and by不久以后/将来
by and large总的来说/大体上
by any means无论如何
by chance偶然/碰巧/意外地
by comparison比较起来
by error错误地
by far…得多/最最
by force凭借暴力/强迫地
by hand用手/用手工的
by heart熟记/牢记/凭记忆
by instinct凭(靠)本能
by itself自动地/单独地
by little and little一点一点地/逐渐地
by means of用/凭借/依靠
by mistake错误地
by name名叫/用名字
by nature生性/本性上
by night在夜间/趁黑夜
by no means决不/并没有
by oneself独自地/单独地
by pressed for缺少/缺乏
by reason of由于/因为
by reason that因为…/由于…
by request应邀/应(听众)的请求
by the name of名叫
by the way顺便提一下/另外
by turns轮流/交替地
by virtue of依靠…/由于/因为
by way of通过…方法/经由
by worthy of值得
by yourself你独自地/你独立地
