betodo的八种用法

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be+动词不定式（即be+todosth.）

be+动词不定式（即be+todosth.）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 t o 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.8.were 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 sucha thing.即使太阳从西边出来,我也决不做这种事.9.be 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.Exercise1.We have been looking for the boy all the afternoon but he is nowhere _____.A.to seeB.seeingC.seenD.to be seen2.As early as his second film,Chaplin had developed his own manner of acting,the one that ___ world famous.A.would becomeB.becameC.was to becomeD.had become3.----We just saw John at the bookstore.----That’s strange; I didn’t think he ____ back until tomorrow.A.will comeB.was to comeC.is comingD.is to come4.The final examination ___early July.A.is to be heldB.is to be taken placeC.is going to holdD.will be to take place5.If the sun ___ tomorrow,what would we do?A.were not to raiseB.does not riseC.would not riseD.were not to rise6.A new hospital was to ____ in this district,but the money wasn’t collect ed yet.A.have been builtB.be builtC.builtD.have built7.Look at these clouds.____.A.It’s going to rainB.It’s rainingC.It is to rainD.It can rain8.Who do you think ____ for the failure of their marriage.A.to blameB.to be blameC.is to blameD.is to be blamed9.Neither you nor he ____ to the front.A.are to be sentB.is to be sentC.have to be sentD.is to send10.I ____ to bed when there was a knock at the door.A.wentB.am going toC.was to goD.was about to go11.----____ we ____ again next week?----Yes,let’s make it next Wednesday.A.Are; to meetB.Shall; be to meetC.Will; meetD.Are; meeting12.As students,we ____.A.won’t smokeB.are not to smokeC.aren’t smokingD.don’t smokeKey:1.D 2.C 3.B 4.A 5.D 6.A 7.A 8.C 9.B 10.D 11.A 12.B 作业帮用户2017-10-13。

be_to用法

Be to 用法
be to do表示: “计划”、“安排”、“义务”、“应该”、“可能”、“命运”等。如: 1.表示“将”、“计划”、“安排”如： Their daughter is to get married soon.
Who is to question him？
After dinner they were to gosingle sound was to be heard.一点儿声音也听不到。 Not a soul was to be seen.看不到一个人影。 She was nowhere to be found.哪儿也找不到她。 She was never to see his wife and family again. 5.表示“命运”,将来必然要发生的事, “注定……”。如： The worst is still to come. They said goodbye, little knowing they were never to meet again. 6.用于“if…were to do”，表示虚拟语气。如： If it were to rain tomorrow, the sports meeting would be put off.如果明天下雨,运动会就会延期。
2.表示“义务”、“应该” 。(意思接近于should， must， ought to， have to)如： No one is to leave the building. 谁也不得离开这楼房。 You are not to smoke in this room.=You are not supposed to smoke in this room. You are to be back by 10 o’clock.你必须十点以前回来。 3.表示可能性,相当于can, may如: Such books are to be found in the library.这样的书在图书馆里就能找到。

SAKARA精要语法之Be to do

SAKARA 最精要语法之Be to do在英语里，“ be + to do ”结构可用来表示将来时间，它的具体用法如下：1. 表示“按计划、安排（要做某事）”。

（多用于此情景）。

例如：We are to meet at the school gate. （我们将在校门口碰头。

）They are to go travelling in August. （他们计划八月份去旅游。

）The Queen is to visit Japan in a week’s time.女王将于一周后访问日本2. 表示“命令”。

例如：You are to be back before five o'clock. （你须在5 点钟以前回来。

）The room is to be locked. （这个房间要上锁。

）表示“必须”，相当于must, have to。

例如：The letter is to be handed t o 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3. 表示“职责”。

例如：I am to inform you that the meeting will be held in Wuhan. （我谨通知你会议将在武汉召开。

） He is to design a new machine. （他将设计一台新机器。

）PS：————————————————————will do、be going to和be to do对比：这三个短语都是用来表示将来时，区别如下：1. will do 是表意愿eg. Now if you will take off your clothes, we will fit the new clothes on you in front of the mirrow.2. be going to 表将来a) 主语的意图，即将要做某事，含有主观的打算或计划eg. What are you going to do tomorrow?b)计划，安排要发生的事eg. The play is going to be produced next month.c)有迹象要发生的事eg. Look at the dark clouds, there is going to be a storm.3.be to do 是指按计划或正式安排将发生的事，表示客观安排或受人指示而做某事eg. We are to discuss the report next Saturday.I am to play fo otball tomorrow afternoon. (客观安排，如这儿有场比赛定在明天下午，不去不行，不能由主观决定)再看：I'm going to play football tomorrow afternoon. (主观安排，如我只是和朋友约了明天下午踢足球以消遣时间，可去可不去，可由主观决定)后者（be going to）是将去做某事，蕴含将来时意义；而前者（be to do ）是必须做某事，带有责任的意思。

be to do 用法详解 qq

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：\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.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：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.8.were to do sth.用于if或even if / even though从句中,表示对未来的假设.例如：Even if the sun were to rise in the west,I would never do such a thing.即使太阳从西边出来,我也决不做这种事.9.be 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：This house is to let.这房子要出租.对将要发生的事,如果人的意志不能控制,人为不能安排,则不可以用”be to do”,而要用will ,be going to do.如：It will rain.It is going to rain.不可用It is to rain.Will表示未经事先考虑而只是说话时临时作出的决定,表示说话人认为,相信,希望或假定要发生的事,也可表示倾向性或规律性,事物的固有属性或必然趋势.Be going to 表示事先经过考虑,或有迹象表明某事即将发生或肯定发生,一般带有时间状语,常用于口语.。

betodosth的几种用法

be + to do sth.的用法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。

betodosth的几种用法

be + to do sth.的用法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。

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。

be to do的含义和用法(一)

be to do的含义和用法(一)be to do的含义•“be to do” 通常用来表示将要发生的事情或计划中的安排•它可以用来表达将来发生的事件，或者约定、计划中的行动用法一：表示将要发生的事情•表示将来某个特定时间或日期会发生的事情–The meeting is to be held next Monday. (下周一将举行会议)•表示将来会发生的事件或行动–He is to receive an award for his achievements. (他将获得一项成就奖)用法二：表示计划或安排中的行动•表示即将要进行的行动或计划中的活动–They are to start the project tomorrow. (他们明天将开始这个项目)•表示指定的任务或职责–She is to manage the new department. (她将负责管理这个新部门)用法三：表示对现实状态的期望或命令•表示期望或命令某人按照某种状态或方式去做某事–You are to remain silent during the examination.(考试期间你要保持安静)•表示对将来的计划或要求–The students are to submit their assignments by Friday. (学生们要在周五之前提交作业)用法四：表示不确定事件或假设•表示假设、猜测或推测–If it rains tomorrow, the picnic is to be canceled.(如果明天下雨，野餐将被取消)•语气委婉地表示某事不太可能发生–He is not to be trusted. (他是不可信任的)以上是”be to do”的几种常见用法和含义，希望对你有所帮助。

betodo的八种用法

b e t o d o的八种用法 The latest revision on November 22, 2020b e t o d o的八种用法一、表示坚决的命令，可译为“必须”。

.这个淘气的男孩必须在这里站到下课。

.未经保安人员的允许，任何人都不得进入这栋楼。

二、表示“计划”或“安排的事项”。

.贝蒂很快就要结婚了。

.今天下午会有一个保险代理人来跟我们见面。

三、表示“可能性”。

你会不会帮你的妻子还债.哪儿也找不到这只可爱的小狗。

四、表示“意图”“决心”或“打算”。

,youhadbetterhurry.要想准时到达那儿，你最好快点。

,wemustbesincerewithoneanother.要想保持友谊，我们都必须真诚相待。

五、表示“应该”。

你做得很好，你应该受到奖赏。

.应该避免这种下流的问题。

.你应该报警。

六、表示“注定”“不可避免”“必然会发生”。

,Tommy.安妮不知道她的男朋友托米会出什么事。

.杀人犯被判终身监禁并且永远不能和家人见面。

她对她不友好的行为并没有想太多，然而，这些行为必将给她带来不利。

'tworriedabouthisheadinjury,butitwastobetroublesomeforhimlater.汤姆并不担心他头部的损伤，但是以后这损伤必将给他带来麻烦。

.你必将为你所做的事承担后果。

七、用于虚拟语气，表示一种假设。

,Iwoulddoitwell.这件事如果我来做，我会做好它。

,youwouldnotbeabletoarriveatyourdestinationontime.你现在即使坐出租车，你也不会准时到达目的地的。

八、有“期待将来”的含意。

.这种新发明出来的设备的实用性如何还有待观察。

'sappointmentwiththeaccountancyfirmisyettobeconfirmed.亨利与这家会计事务所的约定还有待确认。

Exercises:.;;;;know,Iwouldgotomeethimatthestation.;;;;comeKeys:CCDBAA。

betodo的用法

betodo的用法“be to do”的用法在英语学习中，“be to do”这个结构有着多种用法，掌握它对于我们准确理解和运用英语至关重要。

“be to do”最常见的用法之一是表示“按计划、安排即将发生的动作”。

例如：The train is to arrive at 8 o'clock（火车将在 8 点到达。

）这里，“is to arrive”表明火车的到达时间是事先安排好的。

它还可以用来表示“职责、义务、意图、约定”等。

比如：You are to be back by 10 o'clock（你得在 10 点前回来。

）此句中，“be to do”强调了一种责任或义务。

“be to do”有时也用于表示“注定、必然”的意思。

举个例子：He was never to see his wife again（他注定再也见不到他的妻子了。

）这种用法带有一种命运安排的感觉。

在条件状语从句中，如果主句是将来时，从句可以用“be to do”来表示将来的动作。

比如：If you are to succeed, you must work hard（如果你想要成功，就必须努力工作。

）此外，“be to do”还有“能够、可以”的意思。

比如说：This room is to let（这个房间可以出租。

）当“be to do”用于表示命令时，语气较为强硬。

例如：You are to stay here until I come back（你得待在这儿直到我回来。

）与“be about to do”和“be going to do”相比，“be to do”更强调计划的确定性和正式性。

“be about to do”表示即将发生的动作，通常不与时间状语连用；“be going to do”侧重于打算、计划做某事。

为了更好地掌握“be to do”的用法，我们需要通过大量的阅读和练习来加深理解。

在阅读英语文章时，留意其中“be to do”的使用情境，体会其在不同语境中的含义。

be动词不定式（即betodosth.）的用法

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。

betodo的用法

betodo的用法“be to do”的用法在英语学习中，“be to do”这个结构的用法较为复杂多样，掌握它对于准确理解和运用英语句子至关重要。

接下来，让我们一起详细了解一下“be to do”的各种用法。

首先，“be to do”可以表示“按计划或安排将要做某事”。

例如，“The meeting is to be held next Monday”（会议将在下周一举行。

）这里就明确地指出了会议举行的时间是已经安排好的。

再比如，“She is to arrive at the airport at six o'clock”（她将于六点到达机场。

）这种用法强调了事情的计划性和确定性。

其次，“be to do”有时用于表示“命令、指示或要求”。

比如，“You are to do your homework before watching TV”（你得先做完作业才能看电视。

）在这个句子中，“be to do”体现了一种明确的指令。

又如，“All the students are to report to the classroom at 8:00 am”（所有学生都要在上午八点到教室报到。

）这种用法带有一定的权威性。

“be to do”还能表示“可能性、注定”。

例如，“This house is to be sold”（这房子注定要被卖掉。

）意味着某种情况在未来是必然会发生的。

再看，“He is never to succeed”（他永远不会成功。

）这里表达了一种注定的结果。

此外，“be to do”在某些情况下可以表示“意图、打算”。

比如说，“If you are to go shopping, please buy some milk for me”（如果你打算去购物，请给我买些牛奶。

）这体现了某人的主观意愿和计划。

在一些特定的句型中，“be to do”也有独特的用法。

比如，“Was/were to have done”表示“本打算做某事却未做”。

be+动词不定式

b e+动词不定式(即b e+t o d os t h.)(总3页)--本页仅作为文档封面，使用时请直接删除即可----内页可以根据需求调整合适字体及大小--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 tobe 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.Exercisehave been looking for the boy all the afternoon but he is nowhere __ ___.see be seenearly as his second film,Chaplin had developed his own manner of act ing,the one that ___ world famous.become to become becomejust saw John at the bookstore.----That’s strange; I didn’t think he ____ back un til tomorrow.come to come coming to comefinal examination ___early July.to be held to be taken placegoing to hold be to take placethe sun ___ tomorrow,what would we do？not to raise not risenot rise not to risenew hospital was t o ____ in this district,but the money wasn’t coll ected yet.been built built builtat these .’s going to rain ’s rainingis to rain can raindo you think ____ for the failure of their marriage.blame be blame to blame to be blamedyou 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 gowe ____ again next week？----Yes,let’s make it next Wednesday.; to meet ; be to meet; meet ; meetingstudents,we ____.’t smoke not to smoke’t smoking ’t smokeKey:作业帮用户2017-10-13。

be to do的用法

"be to do" 是一个常用的英语结构，表示计划、安排或预期要做的事情。

这个结构通常用于描述未来的行动或计划，强调事情已经安排好或即将发生。

下面是 "be to do" 用法的几个例子：
1. 计划或安排：
* We are to meet at the train station at 5 pm. 我们计划在下午5点在火车站见面。

* They are to get married next year. 他们计划明年结婚。

2. 表示义务或职责：
* You are to finish your homework before watching TV. 你应该先完成作业再看电视。

* He is to pay the bill by the end of the month. 他必须在月底前支付账单。

3. 表示可能性或预期：
* It is to rain this afternoon. 今天下午可能会下雨。

* He is not to be trusted. 他不可信。

需要注意的是，"be to do" 结构中的 "to" 是不定式符号，表示后面的动词是未发生的动作。

这个结构也可以与情态动词 "can" 或 "could" 一起使用，表示能力或可能性。

例如：
* She can't be to do it all by herself. 她不可能一个人完成所有的事情。

be+动词不定式(即be+todosth.)

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 / we re 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 thing.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.Exercisehave been looking for the boy all the afternoon but he is nowhere _____.see be seenearly as his second film,Chaplin had developed his own manner of acting,th e one that ___ world famous.become to become becomejust saw John at the bookstore.----That’s strange; I didn’t think he ____ back until tomorrow.come to come coming to comefinal examination ___early July.to be held to be taken placegoing to hold be to take placethe sun ___ tomorrow,what would we donot to raise not risenot rise not to risenew hospital was to ____ in this district,but the money w asn’t collected ye t.been built built builtat these .’s going to rain ’s rainingis to rain can raindo you think ____ for the failure of their marriage.blame be blame to blame to be blamedyou 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 gowe ____ again next week----Yes,let’s make it next Wednesday.; to meet ; be to meet; meet ; meetingstudents,we ____.’t smoke not to smo ke’t smoking ’t smokeKey:作业帮用户2017-10-13。

be to do用法详解

“be+动词不定式”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 reac h 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. 最好看的节目还在后头。

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 goi ng 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 c hair. 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。

We are to be married in June. 我们计划在6月结婚。

说明：该结构也可用于条件状语从句。

如：If I’m to be there on time, I must le ave at once. 如果我要想准时赶到那儿，我就必须马上动身。

be to do的正确用法

be to do的正确用法be to do sth 的正确用法1、be + to do表示“想，打算”，相当于intend, want。

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。

以下是be to do sth. 作情态助动词的用法。

2、be + to do 表示按计划或安排要做的事。

When are you to leave for home?你什么时候回家?She is to be married ne某t 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，但并说明计划是否被执行了，所以也可表示曾经计划但未有实现的事。

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。

3、be + to do 表示“可以，可能”，相当于may, can。

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。

be to do sth 的几种用法

be + to do sth.的用法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。

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。

be+ 不定式

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。

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。