“Be+不定式”用法小结

Be动词与动词不定式的连用Be动词是英语中的一个重要的动词，它在句子中常常与动词不定式连用。

动词不定式是用来表示动作、状态或目的的。

当Be动词与动词不定式连用时，会产生不同的语法和语义效果。

本文将探讨Be动词与动词不定式的连用情况及其在句子中的功能和用法。

一、Be动词与动词不定式的基本用法1. Be动词+动词不定式原形：表示被动、倾向或习惯性动作。

例如：- My car needs to be repaired. （我的车需要修理。

）- She seems to be crying. （她似乎在哭。

）- They used to be friends. （他们曾经是朋友。

）2. Be动词+not+动词不定式原形：表示否定。

例如：- He doesn't want to be disturbed. （他不想被打扰。

）3. Be动词+动词不定式进行时态：表示进行中的动作或状态。

例如：- I am studying to be a doctor. （我正在学习成为一名医生。

）- She was planning to go on a trip. （她正在计划去旅行。

）二、Be动词与动词不定式的句型变化1. Be动词与动词不定式的一般句型：主语 + Be动词 + 动词不定式例如：- I want to be a teacher. （我想成为一名老师。

）- You need to be more careful. （你需要更小心一些。

）2. Be动词与动词不定式进行时态的句型：主语 + Be动词 + 动词不定式进行时态例如：- He is considering to start his own business. （他正在考虑创业。

）- We were hoping to meet you at the party. （我们希望在派对上见到你。

）三、Be动词与动词不定式的用法特点1. Be动词与动词不定式连用时，常用于表示愿望、打算、能力、义务等情况。

be +动词不定式（即be + to do sth.）的用法如下：1.表示按计划或安排要做的事.例如：When are you to leave for home你什么时候回家She is to be married next month.她将于下个月结婚.The Queen is to visit Japan in a week’s time.女王将于一周后访问日本. 这种结构也可用于过去.was / were to do sth.表示曾经计划要做的事,但不表明计划是否被执行,或表示“命运（即命中注定要发生的事）”,而非计划；was / were to have done sth.表示未曾实现的计划.例如：I felt nervous because I was soon to leave home for the first time.我感到很紧张,因为我很快就要首次离开家了.They said goodbye,little knowing that they were never to meet again.他们告了别,不知道以后再也不会见面了.We were to have told you,but you were not in.我们本来想告诉你的,但是你不在家.2.表示“应该”,相当于should,ought to.例如：You are to report to the police.你应该报警.What is to be done应该怎么办呢3.表示“必须”,相当于must,have to.例如：The letter is to be handed to him in person.这封信必须亲手交给他.You are to do your homework before you watch TV.看电视之前你得先做完作业.4.表示“想,打算”,相当于intend,want.例如：If we are to be there before ten,we’ll have to go now.如果我们要在十点前到,我们现在就得走.5.用于第一人称疑问句,表示征求对方意见.例如：Am I to go on with the work要我继续完成这项工作吗What are we to do next我们下一步该怎么办6.用于否定句,表示“禁止”,相当于mustn’t.例如：The books in this room are not to be taken outside.这个室内的书籍不得带出室外.You are not to smoke in the reading-room.你不可以在阅览室里吸烟.7.表示“可以,可能”,相当于may,can.例如：The news is to be found in the evening paper.这条消息可以在晚报上见到. Such people are to be found everywhere.这种人到处都有.She is nowhere to be found.在哪里也找不着她.to do sth.用于if或even if / even though从句中,表示对未来的假设.例如：If I were to tell you that I killed him,would you believe me要是我告诉你是我杀了他,你会相信吗Even if the sun were to rise in the west,I would never do such a thin g.即使太阳从西边出来,我也决不做这种事.to blame(该受责备,对某坏事应负责任)与be to let(待出租)两种结构中,用不定式的主动形式表示被动含义.例如：Which driver is to blame for the accident这事故是哪个司机的责任This house is to let.这房子要出租.Exercise?have been looking for the boy all the afternoon but he is nowhere __ ___.see be seen?early as his second film,Chaplin had developed his own manner of act ing,the one that ___ world famous.become to become become?just saw John at the bookstore.----That’s strange; I didn’t think he ____ back until tomorrow.come to come coming to come?final examination ___early July.to be held to be taken place?going to hold be to take place?the sun ___ tomorrow,what would we donot to raise not rise?not rise not to rise?new hospital was to ____ in this district,but the money wasn’t c oll ected yet.been built built built?at these .’s going to rain ’s raining?is to rain can rain?do you think ____ for the failure of their marriage.blame be blame to blame to be blamed?you nor he ____ to the front.to be sent to be sent to be sent to send?____ to bed when there was a knock at the door.going to to go about to go?we ____ again next week----Yes,let’s make it next Wednesday.; to meet ; be to meet?; meet ; meeting?students,we ____.’t smoke not to smoke?’t smoking ’t smoke? Key:作业帮用户2017-10-13。

“Be+不定式动词”在不同情况下，可以表示很多种不同的语义。

下面便是其中九种：⒈表示坚决的命令。

例如：1. This naughty boy is to stay here until the class is over.2. No one is to enter this building without the permission of the se curity guard.⒉表示“计划”或“安排的事项”。

例如：3. Betty is to be married soon.4. An insurance agent is to meet us this afternoon.⒊表示“可能性”。

例如：5. Are you to pay the debt for your wife?6. The lovely puppy is nowhere to be found.⒋表示“意图”或“打算”。

例如：7. If you are to be there on time, you had better hurry.8. If all of us are to remain friendly, we must be sincere with one a nother.⒌表示“应该”。

例如：9. You have done so well. You are to be rewarded.10. Such nasty questions are to be avoided.⒍表示“不可避免”。

例如：11. Anne was wondering what was to become of her boy friend, To mmy.12. The murderer was sentenced to life imprisonment and was neve r to see his family again.⒎表示“假设”。

to和be的用法一、to和be的基本语法概述to作为不定式符号，常常与动词连用，表达目的、意愿或结果等；be作为动词be的各种形态之一，起连接主体和主补的作用。

两者在句子中都具有重要的语法地位。

本文将重点介绍to和be在不同语境下的用法及其相关规则。

二、to作为不定式的用法1. 表达目的：to可以与动词原形连用，表示某个行动或状态是出于某种目的或意愿。

例如：- I study hard to improve my English.- He bought a new computer to play games.2. 转述他人陈述：to也可以起转述他人陈述、观点或建议之用。

例如：- She told me to come early tomorrow.- My friend advised me to take a vacation.3. 与情态动词连用：to还可以与情态动词连用，构成情态动词短语，表达推测、能力、可能性等意义。

例如：- It might rain today.- He can swim very well.4. 作为介词后置：to还可以放在介词后面构成介词短语，在句中作宾语、补足语、定语等。

例如：- She is looking forward to the party.- The book on the table belongs to my sister.三、be的基本用法1. 表示状态和身份：be作为系动词，表示主语的状态、身份或特征。

例如：- She is a teacher.- They are tired.2. 构成进行时态：be还可以与动词的现在分词形式连用，构成进行时态。

例如：- I am studying English now.- He is eating dinner.3. 表示存在：be常常用于短语there be中，表示某个地点存在某事物或具有某种情况。

“be+不定式”结构的⽤法总结“be+不定式”是⼀个很有⽤的结构，它不仅在中学教材中经常出现，⽽且在⾼考题中也经常出现。

结合中学⽣学习和考试的实际情况，我们将该结构的⽤法归纳如下。

⼀、表⽰将来或预计I don’t know what is to happen to us. 我不知道我们会发⽣什么事。

I went to have a look at the room where I was to talk that afternoon. 我去看了⼀下地⽅，当天下午我要在那⾥讲话。

It was 1491. Columbus was to reach America a year later. 那是1491年，⼀年后哥伦布到达了美洲。

说明：当该结构中⽤了still或yet时，其将来意义更加突出。

如：The worst is still to come. 还有最糟糕的事情要发⽣。

The most severe weather is yet [still] to come. 最恶劣的天⽓还没有到。

The best item on the programme is still to come. 看的节⽬还在后头。

注意，该结构表⽰将来的⽤法是有限的，原则上，只有当表⽰的动作为⼈所控制时才可使⽤它来表⽰将来，否则就是错的。

如可说 I’m going to play tennis，也可说 I’m to play tennis，因为其中的 play tennis是可以⼈为控制的。

⽽在以下各例中，其中的动作均不能为⼈所限制，所以going不可省略：He’s going to be fat. 他要发胖了。

There is going to be a storm. 要下暴风⾬了。

You’re going to break that chair. 你会把那把椅⼦弄坏的。

⼆、表⽰计划或意图They are to be married. 他们打算结婚。

Be动词与不定式的连用在英语语法中，Be动词是非常常见且重要的一部分。

它的用法多种多样，其中之一就是与不定式连用。

本文将就Be动词与不定式的连用进行探讨和解析。

1. Be动词与不定式的连用构成被动语态在英语中，被动语态是通过将Be动词与不定式的过去分词形式连用来构成的。

例如：- The car is washed by John.（这辆车被约翰洗了。

）- The letter will be written by me.（这封信将由我写。

）在这些例句中，Be动词与不定式的过去分词形式连用，强调的是动作的接受者，即车被洗了、信将被写。

2. Be动词与不定式的连用表达目的Be动词与不定式的连用还可以用于表达目的，意味着某个动作以及被动地进行着以达到特定的目的。

例如：- I am here to learn English.（我来这里是为了学英语。

）- She is working hard to achieve her goal.（她正在努力工作以实现她的目标。

）在这些例句中，Be动词与不定式连用，强调的是目的和动作的进行，即来这里是为了学英语、努力工作以实现目标。

3. Be动词与不定式的连用表达可能性和推测Be动词与不定式的连用还可以用于表示可能性和推测，表达一种可能性或假设。

例如：- He might be the chosen candidate for the job.（他可能是这份工作的选定候选人。

）- It could be a good idea to start early.（提前开始可能是个好主意。

）在这些例句中，Be动词与不定式连用，强调的是可能性和推测，即他可能是候选人、提前开始可能是个好主意。

4. Be动词与不定式的连用表示状态或感受Be动词与不定式的连用还可以用于表示一种状态或感受。

例如：- I am happy to see you.（见到你我很高兴。

）- They are proud to be part of the team.（他们为能成为团队的一部分而自豪。

be to do 的用法“be to do”这个结构有两种语法意义，○1连系动词be+动词不定式做表语，○2be to是一个独立词汇单位,具有情态含义,可以把它叫做情态习语(modal idiom)。

一、be +动词不定式,不定式做表语,表示主语和表语在概念上是等同的。

如：The problem is to find a solution.问题是要找到一个解决方案。

His plan is to clean the room.他的计划是打扫房间。

My wish is to be a doctor.我的愿望是成为一名医生。

二、be to +动词不定式中的be to用作情态习语,这时的be to do表示: “计划”、“安排”、“义务”、“应该”、“可能”、“命运”等。

(have to, ought to)。

如: He is to have a holiday. (表示将来)他要去度假。

The committee is to meet today. (表示计划、安排)委员会计划今天开会。

You are to go to the hotel where rooms have already been booked for you.你要去的酒店已经为你安排好了房间。

1.表示“将”、“计划”、“安排”。

(意思接近于be going to)如：Their daughter is to get married soon.他们的女儿要结婚了。

Who is to question him？要询问他的是谁？It was the last film at the cinema，which was to close next day.这是在电影院的最后一场电影了，电影院明天就要关闭了。

After dinner they were to go to a movie.晚饭过后，他们要去看电影。

was/ were to do表示过去曾经计划要做的事，或者过去应当做的事，而且从现在的角度来看已经实现了。

be +动词不定式‎（即be + to do sth.）的用法如下‎：1.表示按计划‎或安排要做‎的事。

例如：When are you to leave‎for home?你什么时候‎回家？She is to be marri‎e d next month‎.她将于下个‎月结婚。

The Queen‎is to visit‎Japan‎in‎a‎week’s‎time.女王将于一‎周后访问日‎本。

这种结构也‎可用于过去‎。

was / were to do sth. 表示曾经计‎划要做的事‎，但不表明计‎划是否被执‎行，或表示“命运（即命中注定‎要发生的事‎）”，而非计划；was / were to have done sth.表示未曾实‎现的计划。

例如：I felt nervo‎u s becau‎s e I was soon to leave‎home for the first‎time.我感到很紧‎张，因为我很快‎就要首次离‎开家了。

They said goodb‎y e, littl‎e knowi‎n g that they were never‎to meet again‎.他们告了别‎，不知道以后‎再也不会见‎面了。

We were to have told you, but you were not in.我们本来想‎告诉你的，但是你不在‎家。

2.表示“应该”，相当于sh‎o uld, ought‎to。

例如：You are to repor‎t to the polic‎e.你应该报警‎。

What is to be done?应该怎么办‎呢？3.表示“必须”，相当于mu‎s t, have to。

例如：The lette‎r is to be hande‎d to him in perso‎n.这封信必须‎亲手交给他‎。

You are to do your homew‎o rk befor‎e you watch‎TV.看电视之前‎你得先做完‎作业。

be+不定式结构表示按计划、安排即将发生的动作。

例如：There’s to be an investigation.I am to have tea with Betty this afternoon.这一结构常见于报纸和广播，用以宣布官方的计划或决定。

例如：The Queen is to visit Japan next year.二是表示命令、禁止或可能性等。

例如：You are to stand here. Do you understand?Tell her she’s not to be back late.一般现在时也可表达将来时间，常见于条件状语和时间状语从句。

例如：If she come s, I’ll tell her all about it.Wait here till the meeting is over.It won’t be long before the rain stops.近义词辨析begin, commence, initiate, launch, start这组词均含有“开始”的意思。

begin在这组词中最常用，泛指开始做某事。

但口语中近年来start用得较多。

The band began to play joyful music.乐队开始演奏欢快的音乐。

commence比begin用法正式。

在宗教或其它仪式及军事用语中人们倾向用commence. The officer ordered the soldiers to commence the attack.军官命令士兵开始进攻。

initiate指进程中的第一步，与何时停止或结束没有关系。

The government has initiated a new reform program.政府启动了新的改革方案。

launch指开始或着手一项活动、计划等大规模或声势浩大的行动，行动前或行动中有一定的宣传鼓动。

be+不定式动词“be+不定式动词”在不同情况下，可以表示很多种不同的语义。

下面便是其中九种：一、表示坚决的命令。

例如：1. This naughty boy is to stay here until the class is over.2. No one is to enter this building without the permission of the security guard.二、表示“计划”或“安排的事项”。

例如：3. Betty is to be married soon.4. An insurance agent is to meet us this afternoon.三、表示“可能性”。

例如：5. Are you to pay the debt for your wife?6. The lovely puppy is nowhere to be found.四、表示“意图”或“打算”。

例如：7. If you are to be there on time, you had better hurry.8. If all of us are to remain friendly, we must be sincere with one another.五、表示“应该”。

例如：9. You have done so well. You are to be rewarded.10. Such nasty questions are to be avoided.六、表示“不可避免”。

例如：11. Anne was wondering what was to become of her boy friend, Tommy.12. The murderer was sentenced to life imprisonment and was never to see his family again.七、表示“假设”。