branch [brɑ:ntʃ]
n
（學(xué)科）分科，分支 , 分別 department division
a branch of knowledge 學(xué)科
e.g. he cut away (剪斷)the dead branch.
break [breik]
v
broke broken breaking 打破break a record ，中斷，中止
違法（法律規(guī)定等） break the law
n
中斷，間歇
break away from 脫離……放棄……
break away from the old traditional ideas
break down (機(jī)器)損壞,故障 倒塌 (精神)崩潰,夸 a nervous break down
break in(to) 闖入 強(qiáng)行進(jìn)入 打斷 插嘴
break off 中止，中斷
break out ==erupt 發(fā)生 爆發(fā) the war broke out after a long period of peace.(長(zhǎng)期和平)
break through 突破
break up 打碎 結(jié)束 中斷
have a break 休息
e.g. there is a break during the performance(演出) for the audience（觀眾） to take a rest.
breakfast ['brekfəst]
n
早飯；have /eat breakfast 吃早飯
breakthrough ['breik,θru:]
n 突破
breath [breθ]
n
1.呼吸，氣息
2.一口氣，一瞬間
catch one’s breath 喘過(guò)氣來(lái)
hold one’s breath 屏住呼吸
out of breath 上氣不接下氣
e.g. i was out of breath after running for the bus.
bring [briŋ]
v
brought ,brought ,bringing 拿來(lái)，帶來(lái)，產(chǎn)生，引起
bring about 引起 帶來(lái) 產(chǎn)生 bring on 引起，導(dǎo)致，使前進(jìn)
bring forward 提出（建議，結(jié)論，觀點(diǎn)等）
bring up 撫養(yǎng)，教育
bring out 生產(chǎn)，制造
bring to 使恢復(fù)知覺(jué)
e.g. i forget to bring my umbrella.（雨傘）
build [bild]
v
built , built ,building 建造，建筑，增大，增強(qiáng)
build up ……develop/grow/increase/rise 逐步建立逐步加強(qiáng)
build on/upon 把---建立于 build of 用---建造
e.g. that house is built of bricks.磚
building ['bildiŋ]
n 建筑物
burn [bə:n]
v
burnt/burned burnt/burned burning 燃燒，燒傷
n燒傷，灼傷
burn out 燒壞，燒光
burn up 燒起來(lái)，燒完
burn---to ashes 把—化為灰燼
burn oneself out 精疲力竭
e.g. i feel i hardly (幾乎)burn out today.
business ['biznis]
n
生意，業(yè)務(wù)trade ，職責(zé)responsibility，企業(yè)company
travel on business 因公出差
get down to business 認(rèn)真著手辦事
e.g. this is none of your business.這與你絲毫沒(méi)有關(guān)系。
busy ['bizi]
adj
忙碌的，熱鬧的 （電話）占線
be busy with (about ,in) 忙著做---
be busy (in ) doing sth 忙著做---
keep sb busy 使某人忙碌
e.g. he is busy with research work. 研究工作
but [bʌt]
prep：除，去，
conj：但是，可是，而
adv：幾乎 僅僅
but for 要不是
not only ……but also …… 不但……而且……
not……but …… 不是……而是……
all but 幾乎，除了，差不多
can not but (do ) 不得不…… 不得不……
e.g. we can't but face the reality.現(xiàn)實(shí)
buy [bai]
v
bought bought buying 購(gòu)買 交易 purchase
e.g. money can't buy happiness.