be able to参见able to.
be about to参见about to.
be afraid of参见afraid of.
be after追求，寻找：
　　The police are after the murderer.　警方在缉拿凶手。
be around 在旁边，在附近：
  A lot of trees are around my house.　我家有许多树。
be attacked with / by a disease患上疾病：
  Three months ago, I was attacked with a heavy disease.　三月前，我患了一场重病。
be bad at不擅长：
  Don’t ask me to dance. I’m bad at it.　别叫我跳舞，我不擅长。
be big on热衷于，偏爱：
  He has been big on playing basketball recently.　他最近热衷于踢足球。
be born出身于••••••；出生在••••••家庭：
  He was born of poor parents.　他出身于贫苦的家庭。
用法导航
  be born in后接某地，某月或某年。若某日出生用be born on; be born of / from后接类似a poor family, poor parents之类的词；be born to sb. 表示“某人生••••••”的意思。例如：
　He was born in 1949 in Shanghai.　他1949年出生于的上海。
　He was born on May 4.　他出生于五月四日。
　He was born of / from a peasant family.　他出生于农民家庭。
　Three children were born to them. 他们生了三个孩子。
be born with生来就有，天生具备：
  She was born with the gift for arts.　她生来就有艺术天赋。
be born yesterday无知，容易上当：
  The children were not born yesterday.　这些孩子不那么容易上当受骗。
be busy doing something正忙于做•••••••：
  He is busy preparing for the examinations. 他正忙于准备考试。
　They are busy fighting drought.　他们正忙着抗旱。
用法导航
在be busy doing短语中，doing前省略了介词in，所以只能用动doing，不能换成不定式to do.　例如：正：He is busy (in) writing.　误：He is busy to write.
be busy with忙于••••••：
He is busy with his entrance examination.　他忙于准备入学考试。
用法导航
(1) be busy with短语中的with也可用at、about或over替换，意思用法都一样。例如：be busy with / at / about / over one’s work忙着工作。
(2) be busy with和be busy in两条短语意思都一样，但用法不同，be busy with后接名词，而be busy in后只能接动名词, in常可省略。
be careful about注意，担心，讲究••••••：
  They are careful about collecting writing material.　他们注意收集写作材料。
be careful of注意，留心，当心：
  You should be more careful of your health.　你应当更加注意你的健康。
　Be careful of the dog.　小心那条狗。
be careful with注意，当心，对••••••十分仔细：
用法导航
  be careful with表示“对•••••••仔细、认真”；be careful of则含有“当心”“爱护”之意。例如：
　You’d better be more careful with your pronunciation.　对你的发音你要更加认真些。
　The public was warned to be careful of rats.　告诉公众当心老鼠。
be careless about不关心，不在乎，不计较：
  She is careless about her food and clothing.　她不讲究吃穿。
be careless of不关心，不把••••••放在心上：
　  The little boy was careless of his mother’s words.　那小男孩没把妈妈的活放在心上。
be careless with疏忽，不注意：
  He was careless with his mistake.　他疏忽了自己的错误。
be certain确信，对••••••有把握；肯定，无疑；一定的，必然的：
I’m certain about it.　我对此很有把握。
Are you certain of success?　你确信会成功吗？
We are certain to be victorious.　我确信他看见了我。
I’m certain that he saw me.　我确信他看见了我。
I’m nor certain whether he’ll go or not.　我不能确定他是否去。
用法导航
(1) be certain和be sure意思用法基本相同，多数情况下可以换用，区别在于be sure 的主语必须是表示人的词。例如：
　　　正：We are certain / sure to win.
　　　正：We are certain / sure that we’ll win.
　　　正：It is certain that we’ll win/
      误：It is sure that we’ll win.
(2) 在使用这两条短语时还应注意的是：它们的意思是“确定”“无疑”“有把握”，所以在肯定句后面所接的从句或不定式不能由whether引起；在否定句后面的从句不能有that 引起。例如：
正：We are certain / sure to win.
正：We are certain /sure that we’ll win.
误：We are certain /sure whether to win (or not).
误：It is certain whether we’ll win (or not).
正：I’m not certain / sure whether he’ll go (or not).
误：I’m not certain / sure that he’ll go (or not).
be connected to / with与••••••连接在一起；被接到••••••；与••••••联姻：
  This city is connected to that one.　这座城市与那座城市相连。
　He is connected with the Smiths by marriage.　他与史密斯家联姻。
be considered as（把某人）看作；（被）认为：
  She is considered as our good monitor.　她被认为是我们的好队长。
be covered with被••••••所覆盖，盖满••••••：
  Seventy percent of the surface of the earth is covered with water. 70％的地球表面被水所覆盖。
be dead against断然反对，顶着，迎着：
  They are dead against the plan.　他们坚决反对这项计划。
be devoted to热衷于••••••的；专心于••••••的：
  Some of them were devoted to natural science.　他们有些人专门研究自然科学。
　He is devoted to swimming.　他现在热衷于游泳。
用法导航
  be devoted to, to是介词，所以后不能接不定式，要接名词或动名词。
be different from与••••••不同：
My idea is different from yours.　我的想法与你的不同。
His second book is different from his first.　他的第一本书与第二本书不同。
be difficult to do干••••••是困难的：
  It is difficult for us to do learn English well.　对我们来说学好英语是困难的。
be disappointed感到失望：
用法导航
   be disappointed可用于下列句型：
（1） 后接不定式，例如：
　　　I was disappointed to hear the news that he failed the entrance exam.　我听到他没有考取这个消息后感到失望。
（2） 后接that从句，例如：
　　　I was disappointed that he had gone without a word.　他一句话没说就走了，我感到很失望。
（3） 后接at sth. 后或doing••••••，例如：
   We are not disappointed at the results of the exam.　我们考试结果还可以。
　　We are quite disappointed at hearing the news.　听到这个消息我们很失望。

be doubtful of / about …　怀疑；无法确定是否会：
I am doubtful of his passing.　我怀疑他是否能及格。
be due to由于；应归于；应给，应付给；预定：
用法导航
（1） 该短语在表示“由于”“应归于”“应给”等意思时，to为介词，后接名词或相当于名词的词。例如：
  The delay was due to an accident.　由于一场事故而耽搁了。
　Our success is due to all those who have lent us a helping hand.　我们的成功应归功于所有给予帮助的人。
　The first place is due to the Chairman.　第一个位于应给主席。
　The money is due to the old man.　这笔我钱应给那位老人。
（2） be due to表示“预定”之意时，后接的不定式。例如：
He is due to start for Beijing tomorrow.　他预定明天动身去北京。
be dying for非常想，渴望：
　　It’s so hot, I’m dying for a drink.　天这么热，我很想喝水。
be dying of•••••得要死；••••••得要命；非常：
  He didn’t come and I was dying of worrying.　他没有回来，我担心得要命。
be dying to do渴望；很想：
  I am dying to see my mother.　我很想见我的母亲。
be eager of / after ••••••渴求，渴望：
  We are all eager for world peace.(knowledge).　我们大家都渴望世界和平（获取知识）。
be eager to do急着要：
　　They are eager to learn English.　他们急着要学英语。
用法导航
  be eager 和be anxious都表示“急于••••••”，但eager强调的是“对成功的期望”或“进取的热情”，含有积极向上的意思，而anxious强调“担心”或“焦急”，对••••••感到不安。例如：
　I’m eager to do that interesting work.　他急于想做那件有趣的工作。（有积极的干劲和热情）。
　I’m anxious to know the news from the front.　我急于想知道前线传来的消息。（心中焦急）
be familiar to为••••••所熟知：
  The story is very familiar to him.　他很熟悉这段经历。
be familiar with熟知，通晓：
  I am familiar with that story.　我熟知那些事情。
　He is familiar with French.　他通晓法语。
用法导航
   be familiar with和be familiar to都有“熟知”“通晓”的意思。前者的主语应该是“熟知”“通晓”某事物的人，后者的主语应是被“熟知”“通晓”的事物。例如：
   他通晓英语和法语。He is familiar with English and French. / English and French are familiar to him.
be famous for因••••••而著名：
  New York is famous for its tall buildings. 纽约以高楼大厦而闻名。
  This city is famous for its hot springs.这个城市以温泉而出名。
用法导航
  be famous for表示“因•••••而著名”，be famous as表示“作为••••••而著名”，例如：
  Guilin is famous for its beautiful water and mountains. 桂林因其漂亮的山水而闻名。
  Guilin is famous as a beautiful city桂林作为一座漂亮的城市而出名。
be fearful of doing 担心：
   I am fearful of her breaking the glass. 我担心她会弄碎那块玻璃。
be fit for适合，能胜任：
   This book is fit for children. 这本书适合儿童阅读。
   This is fit for the job. 她适合她（能胜任）这项工作。
be fond of喜欢，爱好：
  Are you fond of children?　你喜欢小孩子吗？
　Tom is fond of playing baseball.　汤姆喜欢打棒球。
be fortunate to do(in doing):很幸运：
  She is fortunate enough to have a rich husband，或She is fortunate in having a rich husband.　她很幸运，有一位富有的丈夫。
　The boy was fortunate to escape without being injured.　这男孩没受伤且逃脱了，真是幸运。
be friendly with与（某人）亲近，与••••••要好：
 He has been very friendly with us.　他一向对我们很友好。
be frightened of害怕：
  I am frightened of mice.　我怕老鼠。
be from从••••••来，是••••••人：
  Where are you from?　你是哪里人？
　I am from France.　我是法国人。
be full of充满，很多：
 　They were full of hope and joy.　他们充满希望与快乐。
　This article is full of mistakes.　这篇文章错误很多。
用法导航
be full of与be filled with同义，可以替换，使用时注意介词的固定搭配。
be glad of高兴：

用法导航
第二个例句是用在和初次见面的人道别时说的话。
be good at在••••••方面（学得，做得）好；善于：
  She is very good at Latin.　他精通拉丁语。
　He is good at making excuses.　他善于辩解。
be happy to do / that高兴：
  I am happy to see you.　我很高兴见到你。
　I am happy that you are well.　我很高兴你健康无恙。
be hopeful of期待：
  I’m hopeful of success / succeeding in the business.　我想那笔生意会成功。
be hopeless at在••••••没有希望，无能的：
  They are hopeless at match.　他们数学学得很烂。
be in / back / out在家（回来，出去）：
  Is your father in? No, he is out.　你爸在家吗？不，他出去了。
be in hospital（生病）住院：
  My father was in hospital last week.　你父亲上周住院了。
用法导航
  in hospital和in the hospital意思不同，in hospital指生病住院，而in the hospital则指“在医院上班、办事等”。例如：
　He was in hospital last week.　他上周生病住院了。
　He works I the hospital.　他在那家医院上班。
be in love with跟••••••恋爱：
  My brother is in love with her.　我的哥哥跟她谈恋爱。
　The young pair are in love with each other.　这对年轻人在谈恋爱。
be interested in对••••••有兴趣：
I’m interested in football.　我对足球有兴趣。
I’m interested in collecting foreign stamps.　我对收集外国邮票有兴趣。
be interested to do想要：
  We’re interested to know the result of the game.　我们很想知道比赛的结果。
be kind to do好心的：
  Will you be kind enough to tell me the truth?　请你告诉我事实真相好吗？
　Will / Would you be so kind as to help me?　请帮帮我好吗？
be late for迟到：
  He was five minutes late for work.　他上班迟到五分钟。
be late (in) doing做••••••迟，做••••••晚：
Spring is late(in) coming this year.　今年春天姗姗来迟。
be mad about热衷于••••••，为••••••着迷：
  She is mad about the music.她醉心于音乐。
be mad for极想要••••••：
He is mad for a motorbike. 他极想要一部摩托车
He was mad for water. 他很想喝水。
be made of / from 由••••••制（构）成；用••••••做成：
  Their houses are made of stone. 他们的房屋是由石头造成的。
  Wine is made from grapes. 葡萄酒是由葡萄做成的。
be made up of由••••••造成；由••••••构成：
  The committee is made up of nine members. 这个委员会由九位委员组成。
用法导航
(1) be made from 和be made of都表示“由••••••原料制成”，但二者有区别，be made from往往指由原料经过质的变化做成另外的一种东西，在成品中看不见材料：be made of 常表示原材料不经过质的变化凑在一起，构成另外一种东西，在制成品中能看见原材料。例如：
Paper is made from grass. 纸是草做的。
The desk is made of wood. 桌子是木头做的。
(2) be made up of也表示“由••••••构成（组成）”，但强调的是构成部分，而不是原料。例如：
Our class is made up of six groups. 我们班由六个小组组成。
be off离开，取消，竣工，变坏：
  The ship is off.　船离开了。
  Their marriage is off.　他们的婚礼取消了。
be on进行，处于••••••状态：
  The talk is on.　谈话正在进行。
　A new film is on this week.　本周有一部电影上映。
　The tap is still on, please turn it off.　水龙头还开着呢。请把它关上。
be on one’s back仰卧，病卧：
  I’m not feeling well so I want to be on my back for a while.　我感到不舒服，因而我想躺一会儿。
be on sb’s back成为某人负担；打扰（某人）：
 Her little daughter is on her back; she can’t do any work.　她小女儿成为她的负担，她什么事也不能做。
 Don’t be on his back; he’s got enough on his mind.　不要打扰他了，他要考虑的问题多了。
be on show展览：
  The new model planes are on show.　新型的飞机正在展示中。
be on strike在罢工：
 The workers are on strike now. 工人们正在罢工。
be out出去，在外：
 “Is Jane at home(in)?” “No, she is out shopping.”　“珍妮在不在家？”　“她不在家，她外出买东西去了。”
 The boat is out at sea.　那条船在海上航行。
be out of在••••••之外，离开；缺乏，没有：
  The patient is out of danger now.　病人现在脱离危险期了。
　Your skirt are out of fashion.　你的裙子已不流行了。
　Fish cannot live out of water.　鱼儿离不开水。
be out to企图，决心，很想••••••：
  I’m out to go home.　我很想回家。
be over结束，完了：
  Class is over .下课了。
　The storm is over.　暴风雨过去了。
be pleased高兴：
  He is pleased about the result. 他对于这结果很满意。
be pleased at看到（听到，知道）很高兴：
  I was very pleased at the news.　我听到这消息很高兴。
　She was pleased at being chosen chairwoman. 她被选为主席很高兴。
be pleased with对••••••满意，对••••••中意，喜欢：
  We’re very pleased with what he has done.　我们对他所做的感到满意。
　I’m very pleased with my new shoes.　我很喜欢我的新鞋。
be poor at不善于•••••：
  We’re poor at swimming.　我们不善于游泳。
be popular with sb.　受某人欢迎：
  He is popular with the readers.　他很受读者的欢迎。
be prepared for •••••　对••••••做好准备：
  We are prepared for the worst.　我们已有最坏的打算。
be ready for已做好••••••准备，为••••••已准备就绪；心理上对••••••已有所准备，甘愿冒••••••之险：
　Our team is ready for the game.　我们队已做好了比赛的准备。
　I am ready for this showdown.　对这次摊牌我心理上已有所准备。
be ready to do准备好的；愿意的,甘心的；快要••••••的，易于•••••的，动辄••••••的：
  We are ready at all times to start.　我们随时准备出发。
　The soldiers were ready to die for their country.　士兵们甘愿为国捐躯。
　She was ready to burst into tears.　她就要哭出来了。
be ready with已准备好：
  We are ready with the examination.　我们已为考试做好了准备。
用法导航
  be prepared for, be ready for和be ready with都表示“为••••••做好准备”，意思、用法基本相同,ready前加always时，常带有一定的感情色彩，例如：
　　He is always ready to help others.　他总是乐于助人。
    She is always ready to quarrel with others.　她总是动不动就同另人吵。
be rich in在••••••充足；富于：
  The district is rich in minerals. 该地区矿产资源丰富。
  This kind of vegetable is rich in vitamin C. 这种蔬菜含有丰富的维生素C。
be satisfied to do对••••••感到高兴：
  I am satisfied to hear that. 我很高兴听到那件事。
be satisfied with对••••••感到满意：
  Her parents are satisfied with her school report. 她父母对她的成绩感到满意。
be seated 就座，坐下：
  Please be seated. 请坐下。
  She was seated between us. 她坐在我们之间。
用法导航
  动词seat常以被动形式来表示主动的意思，这是英语的习惯用法。例如：
  Please be seated. = )please seat yourself) 请坐。
be strict in (doing) sth. 对（做）某事严格：
  We must be strict in our work. 我们必须严于职守。
  He is very strict in obeying the rules. 他在遵守规章方面很严格。
be strict with sb. 严格要求某人
  He is strict with his son but kind to him. 他对儿子要求严格，但亲切和善。
be sure确信，肯定，有把握：
  I think that it was years ago, but I’m not sure about it. 我想那是两年前的事，不过我不能肯定。
用法导航
(1) be sure后面可接介词of或about构成be sure of / be sure about, 后接名词或供词，它们的意思都是“确信”“有把握”。be sure后面也可接不定式，构成be sure to do sth. 表示“一定要”“必然”的意思。例如:
Be sure to tell me all the news. 一定要把所有的消息都告诉我。
(2) be sure后面不接that/ when/ where/ what /how / if/ whether等引导的从句，表示“确信••••••” 的意思、例如 ：
I’m sure that he is honest. 我确信他是诚实的。
I’m not sure if/ whether I can come next week. 我是否能来还说不准。（参见be certain）
be surprised感到惊讶：
  He was surprised at her words. 他听到她的话感到惊讶。
  I was surprised to see him there. (I was surprised at seeing him there.)我在那时看见他感到很惊讶。
用法导航
(1) be surprised后面可接at。强调原因；也可接by,强调动作。例如：
They were surprised by the strange noise. 这奇怪的声音使他们吃惊。
(2) be surprised 后面了可接不定式。例如：
I was must surprised to hear that. 我听到那件事非常吃惊。
(3) be surprised还可接that引导从句，that可省略。例如：
I’m surprised that she should be so ill. 她竟病的这么重，我感到吃惊。
be that as it many尽管如此，即使如此，无论如何：
   Be that as it may I will continue to do that. 无论如何我还是要把那件中继续做下去。
用法导航
  这条短语用作状语。
be thirsty for渴望••••••的：
  I am thirsty for detailed information. 我渴望得到详细的消息。
be thoughtful of对••••••体贴，体贴别人的：
   He is thoughtful of others. 他很能体贴别人。
   It’s very thoughtful of you to come to see me. 你来看我，真是考虑太周到了。
be tired from因•••••感到疲劳：
  He was tired from climbing the mountain. 他爬山爬累了。
be tired of对•••••感到厌烦：
   The naughty by is tired of going to school every day. 这个顽皮的男孩子对天天上学感到厌烦了。
be to do … 准备；次要；预计；必定：
用法导航
  be to do sth. 例如：
（1） 计划或安排。例如：
   Their daughter is to be married soon. 他们的女儿快要结婚了。
   There’s to be a meeting to discuss the problem. 将要举行一次会议来讨论这个问题。
（2） 要求。例如：
      You’re to be back by 10 o’clock. 你得10点回来。
      If he is to succeed, he must try harder. 如果他要成功，那得更加努力。
（3） 命运或必然。例如：
      All these things are to be answered for. 所有这一切都是要偿还的。
      If you break the law, you are to be punished. 若你触犯法律，你必定会受到惩罚。
be torn open被撕开：
  The envelope was torn open. (He tore the envelope open / He tore open the envelop.) 信封被拆开。
be unable to do•••••• 不能••••••：
  We were unable to understand him. 我们无法了解他。
be uncertain about对••••••不确定：
  I am uncertain about where I put the stamp. 我不能确定到底把邮票放在哪里。
  I am uncertain about what to do next. 我不知道下一步该怎么办。
be uncertain of对••••••不以确定（没有把握）：
   He is uncertain of success. 他对成功与否没有把握。
   I’m uncertain of his meaning. 我不能确定他的意思。
be unfit for不适合；不胜任：
  She is unfit for teaching. 她不适合教书。
be unwilling to do不愿意••••••的：
   I was unwilling to go there alone. 我不愿意独自去那里。
   I am unwilling to acknowledge defeat. 我不愿认输。
be up to胜任；该由•••••••负责；直到；相等于，将近；达到，符合：
  I’m afraid I’m not up to playing the role, but I’ll do my best. 这个角色恐怕我胜任不了，不过我将尽力而为。
  It’s up to him to make the final decision. 这要由他做最后的决定。
  Up on the present, over twenty factories have been set up in my home town. 到目前为止，我的家乡已经办了二十多家工厂。
  The great hall holds up to 3,000 people. 这座大厅能容纳近三千人。
  The new products proved to be up to standard. 这些新产品经检验是合格的。
be used to习惯于••••••：
  He is used to air travel. 他习惯坐飞机旅行。
  I am used to staying up late at night. 我习惯熬夜。
用法导航
(1) be / become / get used to意为“习惯于”可用各种时态，其中to是介词，后接名词，代词或动名词。在强调状态的改变，从不习惯的习惯时应该使用become / get used to. 例如：
You’ll get / become used to the work in a short time. 你不久就会习惯这项工作的。
I am used to driving in all kinds of weather. 我习惯于在各种天气里开车。
(2) be used to有时是动词use的被动语态，这时to后接动词原形，表示“被用来••••••”。例如：
This machine is used to make farm tools. 这台机器是用来制造家具的。
(3) used to意为“过去常常”，暗含“现在不那样了”，后接动词原形，只用于一般过去时。例如：
He used to fish for hours. 他过去钓鱼常常一钓就几个钟头.
be useful for对•••••有用：
  This map isn’t useful for traveling by car. 这张地图对开车旅行没有用。
be useful to 对••••••有用：
  This guidebook is very useful to him. 这本指南对他很有用。
用法导航：
   be useful for和be useful to均为“对••••••有用”“对••••••有益”的意思，对于人用介词to，对于目的用介词for。例如：
   His advice has been most useful to me. 他的忠告一直对我很有益。
   Bamboo is useful for building.竹子对建筑有用。
be well / ill affected to / towards 对••••••友好（不怀好意）：
  The tall girl was well affected to the stranger. 这个高个子的女孩对这个陌生人很友好。
be with 支持，同意；被••••••雇用（聘用），在••••••工作：
  I will be with your job. 我会支持你的工作。
be worth值得：
  This shirt is worth $ 10. 这件衬衫值得一读。
用法导航
(1) be worth中的worth是形容词，但它只能作表语，而且单独还不能作表语。后面要接表示“钱数”或相当于“代价”的比喻性名词或主动形式的动名词。例如：
In his opinion, the poor boy is not worth a straw. 就他看来，那穷孩子比草还贱。
The problem is well worth discussing. 这个问题很值得讨论。
(2) 该短语还可用于固定句型“It is worth while doing / to do”中，例如：
  It is worth while discussing / to discuss the problem again. 这问题值得再讨论一下。
be wrong in doing是错的：
  I was wrong in thinking that he was honest. 我误认为他很诚实。
  You was quite wrong in what you said. 你说的话是错误的。