·assign too much homework 布置太多的作业
·assure sb. of sth./that 使某人相信某事 ·attempt to do sth.. 尝试做某事 make an attempt to do sth. ·at a loss不知所措
·at all costs 不惜一切代价 ·at ease 轻松，自在地 ·at present 目前
·at the beginning 最初
·at the cost/expense of 以…为代价 ·at the risk of 冒险做某事 ·on (an/the) average 平均来说，一般来说 ·avoid doing 避免做某事 ·keep/stay awake 保持醒着 ·award sb. the Nobel Prize 授予某人诺贝尔奖
sb. be awarded the Nobel Prize ·be aware/conscious of 意识到… back and forth 来回地 ·go bad 变质
·keep the balance of nature 保持自然界的平衡
·be banned from 被禁止做某事 ·snack bar 小吃店，快餐店 ·go to the barber’s 去理发店 ·pick up a good bargain 无意中买到一件便宜货
·be based on … 建立在…基础之上 ·be on the basis of … ·have a bath 洗个澡 ·be bathed in tears 泪流满面 ·bathing suit 游泳衣 ·on the beach 在海滨 ·bear a share of responsibility 承担一份责任 ·heart beating 心脏跳动 ·beg sb. for sth./ to do sth. 乞求某人做某事 ·begin with… 由…开始 ·behave oneself 管好自己 ·fall/lag behind 落后 ·human being 人类，人 ·believe in … 信任…
·make believe that 假设 ·belong to … 属于…
·benefit sb. a lot 使某人受益匪浅 ·benefit from … 从…当中获益
·be beneficial to … 对…有益
·do one’s best 尽全力 ·read between the lines 理解字里行间的意思 ·big game 大猎物 ·pay the bill 付帐单 ·give birth to … 生下…
·not a bit= not at all 根本不 ·blame sb. for sth. 责备某人某事 ·sb. be to blame 某人有责任 ·fill in the blank 填空 ·blare the horn 按喇叭 ·be blind to … 没有意识到…
·turn a blind eye to … 对…视而不见
·blow up/ be blown up 爆炸 ·notice board 布告栏 ·on board 在船上
·boiled water 开水 ·booking office 售票处
·never bother to do sth. 不操心做某事 ·bottled juice 瓶装的果汁 ·at the bottom of 在…的底部 ·break out 爆发
·break away from … 脱离… ·take a deep breath 深吸一口气 hold one’s breath 屏住呼吸 out of breath 上气不接下气 ·make a brief introduction 作一个简洁的介绍 ·fire brigade 消防队 ·bring up sb. 抚养某人 bring in sth. 引进…
bring about changes 导致变化
·browse through the books 随意浏览书籍 ·bump into sb. 撞上某人；偶遇某人 ·a bunch of flowers 一束花 ·burn sth. to the ground 把…烧光 ·burst into tears 大哭起来 burst out crying
·bury oneself in sth. 埋头做某事 be buried in
·business hours 营业时间
·none of one’s business 不关某人的事 ·be busy doing sth. 忙于做某事 be busy with sth. ·press the button 按按钮
· call at sp. 参观某地 · call on ／ upon sb. 拜访某人；号召某人 · call off a meeting 取消会议 cancel a meeting · calm down 镇静下来 · go on a camping trip 去野营 · on the campus 在大学校园里 · a candidate for a post/position/job 某职位/工作的申请者/侯选人 · cannot help doing 禁不住做某事 cannot help but do sth. 只能做某事 cannot help to do sth.. 无法帮忙做某事
· care about … 关心，忧虑… · care for pop music 喜欢流行音乐 · take good care of… 好好照顾…