现在完成时的被动语态与一般过去时的被动语态的区别
六种现在时态和过去时态的区别和运用(一般现在时
Unit 1-Unit 6 的重、难点1. 六种现在时态和过去时态的区别和运用(一般现在时、现在进行时、现在完成时、一般过去时、过去进行时和过去完成时)2. 一般过去时被动语态3. 定语从句谈论将来的方法Unit 1-Unit 6的六种时态都是复习内容。
时态的运用要清楚每种时态在什么情况下使用,它们的构成以及它们的肯定形式、否定形式和疑问句形式。
时态的区别和运用,比较容易混淆的是:一般过去时和现在完成时。
一般过去时常用于这个时态用来表示过去发生的动作或存在的状态。
它既可以指某次具体的动作,也可以指重复性的动作, 常与表示过去特定时间的状语连用。
例如:When I was a little girl, my brothers and I collected stamps for many years.而现在完成时表示过去发生的动作或事情对现在的影响或产生的结果,着眼点在现在。
现在完成时常与不确定的过去时间状语连用,如:just, before, once等,也同包括现在时间在内的时间状语连用,如:now, today, this morning, this month, this year等。
但不能同特定的过去时间状语连用,如:in 1933, last year等。
或表示一个从过去某个时间开始,延续到现在,并可能延续下去的动作。
常同表示一段时间的状语连用,如:so far, since, for a long time, for the last few years等。
我们来看一个例子:She has lost her wallet. (可能现在没钱花了。
)He has worked here for over twenty years.所以在使用这两种时态时,要特别注意与他们搭配的时间状语。
同时这两种时态的使用也涉及到动词的过去式和过去分词的正确运用。
一般过去时的被动语态也是前六单元的一个重点。
2020新教材人教版英语必修第二册同步培优练习:UNIT3 The internet Section Ⅲ含答案
Section ⅢDiscovering Useful Structures &Listening and Talking基础知识预习自检Ⅰ.重点词汇1.battery n. 电池→batteries n.(pl.) 电池2.confirm v t. 确认;使确信→confirmation n.证实;确认→confirmed adj. 成习惯的;根深蒂固的3.press v t. 按,压;敦促→pressure n. 压力;困扰→under_pressure 在压力下;承受压力4.the_World_Wide_Web 万维网5.in_shape 状况良好6.keep_track_of 掌握……的最新消息;了解……的动态7.get_discounts 获得折扣8.bank_account 银行账户Ⅱ.教材原句1.Much_has_been_written (已经写了很多) about the wonders of the World Wide Web.2.Have_you_pressed (你已经按下了吗) the button yet to copy the file?3.Look at the way your face has_been_washed (已经洗过了).4.Laura needs an app that will help her get_discounts (获得折扣).5.I believe this app could help me get_thinner (变瘦).6.Both of Xiao Bo's apps keep_track_of (记录) the steps he takes.7.You get a message whenever there_has_been_an_update (有更新).8.They've built a kind of new PC with_more_functions (有更多功能的).9.I have_downloaded (已经下载了) the software to help my phone battery last longer.10.Look at the way the paths have_been_swept (被扫过).重点知识合作探究press sb. to do sth. 敦促某人做某事press sb. into doing sth. 迫切要求/勉强某人做某事press sb. for sth.催促/逼迫某人做某事press for sth. 迫切要求……press sth. on sb. 勉强某人接受……;促某人吃(或喝)……(2)n. 报章杂志;报刊;印刷媒体the press/the Press 记者;新闻工作者;新闻界press conference 媒体记者会;记者招待会He pressed his back against the door.他后背紧紧靠在门上。
被动语态重点知识点总结
被动语态复习“三步曲”被动语态是动词语态的一种形式,表示主语是动作的承受者。
在历年的中考题中,都有一定数量的考查被动语态的题目。
因此,有必要对被动语态进行系统复习。
第一曲:掌握被动语态的结构被动语态由"助动词+及物动词的过去分词"构成。
不同时态的被动语态的差异主要体现在助动词be的变化上,同时助动词be还要在人称和数上与主语保持一致。
现将初中阶段常见的几种时态的被动语态总结如下:1.一般现在时的被动语态:am/is/are+done(指及物动词的过去分词,下同)如:English is used all over the world.2.一般过去时的被动语态:was/were+done如: The picture was painted two years ago.3.现在进行时的被动语态:am/is/are+being+done如: The flowers are being watered by them now.4.现在完成时的被动语态:have(has)+been+done如:The room has been cleaned.5.一般将来时的被动语态:will/be going to+be+done如:The work will be finished tomorrow.6.含有情态动词的被动语态:情态动词+be+done如:Your homework must be handed in today.其它几种特殊句型:It is said that …….. It is well known that ……. It is reported that……..have sth done第二曲:掌握主动语态变被动语态的方法把主动语态变为被动语态时,应走好以下三步:1)主动语态的宾语变为被动语态的主语; 2)主动语态的谓语动词由主动语态形式变为被动语态形式; 3)主动结构的主语变为介词by的宾语,组成介词短语,放在被动结构的谓语动词之后。
高中英语Unit3ComputersPeriodFourGrammar—ThePresentPerfectPassiveVoice练习(含解析)新人教版必修2
PeriodFour Grammar—ThePresentPerfectPassiveVoice感知以下课文原句,完成方框下的小题1.Over time I have been changed quite a lot.2.First as a PC (personal computer) and then as a laptop,I have been used in offices and homes since the 1970s.3.Over time my memory has developed so much that,like an elephant,I never forget anything I have been told!4.Since the 1970s many new applications have been found for me.5.I have also been put into robots and used to make mobile phones as well as help with medical operations.1.以上几句中所使用的时态和语态是现在完成时的被动语态。
2.现在完成时的被动语态的构成为:have/hasbeen+过去分词。
现在完成时的被动语态表示到现在为止某事已经被完成或被做。
这种语法项目既要表示现在已经完成又要表示被动的含义,因此很多同学在具体运用当中容易顾此失彼,难以把握。
运用现在完成时的被动语态时应掌握以下几个问题:1.构成现在完成时的被动语态的构成为:have/hasbeen+过去分词。
2.各种句式肯定式主语+have/hasbeendone...否定式主语+have/hasnotbeendone...一般疑问式Have/Has+主语+beendone...?特殊疑问式特殊疑问词+have/has+主语+beendone...?3.使用的场合(1)表示一个被动的动作发生在说话之前,强调对现在造成的影响或结果。
【语法】现在完成时被动语态
现在完成时的被动语态一、现在完成时◆现在完成时的基本结构have / has + done◆现在完成时的用法:(1)表示过去的动作对现在造成的影响或结果I have spent all of my money (so far).(含义是:现在我没有钱花了.)My father has gone to work.(含义是:我爸爸现在不在这儿) (2)表示从过去的动作或状态,持续到现在,并有可能持续下去。
或表示说话前发生过一次或多次的动作,现在成为一种经验,一般译为汉语“过”。
可用于“How long…?”句型中。
He has taught here since 1981.(可能还要继续教)I haven't seen her for four years.I have been to Beijing twice.How long has this film been on?二、现在完成时的被动语态◆现在完成时被动语态的基本结构:have/has +_______ done现在完成时被动语态的否定结构:complete______________ admit_______________ raise______________ replace______________ advertise_____________ solve_____________1. She has cleaned the windows.(改成被动语态)主语谓语宾语The windows (by her).主语谓语2. He hasn’t washed the dirty clothes. (改成被动语态)____________________________________________将下列句子改成被动语态。
1. Mary has locked the door.2. I have finished my homework.3. I have read this book many times.4. Tom has not repaired the computer.5. Jane has referred to the book.6. We have put up a notice on the wall.三、注意事项:1.与一般过去时的被动语态的区别。
七种被动语态形式
七种被动语态形式1) 一般现在时的被动语态(am/is/are+ 过去分词)如: The work is done during two days.2) 一般过去时的被动语态(was/were+ 过去分词)如: He was sent to the hospital immediately after the accident.3) 一般将来时的被动语态(will/shall + be + 过去分词或+ be going to + be + 过去分词)如: The work will be finished soon.4) 现在进行时的被动语态(is/am/are + being+ 过去分词)如: The bridge is now being constructed.5) 现在完成时的被动语态(have/has +been + 过去分词)如: The radio has been repaired when we phoned the shop.6) 带情态动词的被动语态(情态动词+ be + 过去分词)如: This can be done in a few minutes.7) 动词不定式的被动式(to be + 过去分词)如: It is an honor for me to be asked to speak here.现在完成时的被动语态其构成是: have/has been + done现在完成时的被动语态表示动作发生在过去, 到现在已经完成或对现在仍有影响,。
如:1. The dirty clothes have been washed.脏衣服都已经洗了。
2. The plan has been studied by the experts for three times.这项计划已经由专家研究过三次了。
现在完成时:表示从过去持续到现在,还可能继续持续下去的动作,往往和表示一段时间的状语(for+一段时间,since…, )等连用,或用于how long 句型中1. 主语是行为动作的承受者。
人教版高中英语必修2-现在完成时的被动语态用法讲解(教师版)(推荐文档)
【高一同步教程】高中英语必修2 现在完成时的被动语态用法讲解【学习目标】1. 现在完成时被动语态的结构2. 现在完成时被动语态的主要用法3. 使用现在完成时的被动语态需要注意的问题【课前预习】1. 什么是语态?语态是表示主语和动词之间的主动关系或被动关系的动词形式。
英语动词有两种语态: 主动语态和被动语态。
主动语态表示主语是动作的执行者(施动者), 被动语态表示主语是动作的承受者(受动者)。
2. 对现在完成时被动语态的理解现在完成时被动语态的结构就是现在完成时态和被动语态结构的叠合, 即“ have + been + 动词过去分词”。
试比较以下几组句子的谓语结构:1)主动句: He has repaired the machine for two hours.他修理这台机器已有两小时了。
被动句: The machine has been repaired for two hours. 这台机器已修了两小时了。
2)主动句: The teacher has borrowed the books. 老师把那些书借走了。
被动句:The books have been borrowed by the teacher. 那些书被老师借走了。
【教学过程】一、现在完成时被动语态的构成1. 现在完成时被动语态的肯定式由“have /has +been +及物动词的过去分词”构成。
例如:Two windows have been broken. 两个窗子被打破了。
2. 现在完成时被动语态的否定式由“have /has +not+been +及物动词的过去分词”构成。
例如:The car has not been repaired. 这辆汽车还没有修好。
3. 现在完成时被动语态的一般疑问式由“Have /Has +主语+been+及物动词的过去分词”构成。
例如:①─Has her work been finished?她的工作完成了吗?─Yes, it has.是的, 完成了。
将下列句子变为被动语态
语态是动词的一种形式,表示句子中主语和谓语动词的关系,主动语态表示主语是动作的执行者,被动语态表示主语是动作的承受者。
只有及物动词才能用于被动语态。
一.被动语态的时态:1.一般现在时的被动语态:am /is/ are +动词的过去分词2.一般过去时的被动语态:was /were +动词的过去分词3.一般将来时的被动语态:will be +动词的过去分词4.现在进行时的被动语态:am /is /are +being +动词的过去分词5.现在完成时的被动语态:have /has +been +动词的过去分词6.情态动词的被动语态:情态动词+ be +动词的过去分词二.被动语态的基本用法:(1) 需要强调动作的承受者时The Great Wall is enjoyed by millions of people all over the worldEnglish is widely spoken in the world now.(2) 不知道或没必要指出动作的执行者时Mr. Wang is invited to the meeting today .The problem is dealt with now .(3) 当说话人需要强调客观时It is said that she was a beauty when she was young .三.主动主动语态变被动语态的变法:口诀:宾变主,主变宾,谓变be done ,时不变,数格必须随被变。
注:1.主动、被动的时态要一致。
2.主动、被动的句式要一致。
3.变成的被动语态的主语与谓语在单复数上保持一致。
语态转换不被动语态的步骤1, 把原主动句中的宾语转换为被动语态的主语2, 把动词改为被动语态形式即"be+过去分词"。
3, 原来主动语态句子中的主语,如果需要就放在by的后面以它的宾格形式出现(因为by是介词,后面需跟宾格作介词的宾语。
各种时态的被动语态
各种时态的被动语态一、八大时态的被动语态的构成:1.一般现在时的被动语态构成:(am/is/are +done)如:I am asked to study hard. 我被请求努力学习。
This shirt is washed once a week. 这件T恤一周洗一次。
These songs are usually sung by boys. 这些歌曲通常是男生唱的。
2.一般过去时的被动语态构成:(was/were done)如:The soldier was killed, but the train was saved. 这位战士牺牲了,然而列车得救了。
Some notes were passed up to the speaker. 有人给讲演者递上来一些纸条。
3.一般将来时的被动语态构成:(shall/will be done)如:We shall be asked a lot of strange questions. 我们将被问许多怪题。
My son will be sent to school next September. 来年九月我将送我儿子去读书。
4.过去将来时的被动语态构成:(should/would be done)如:The news would be sent to him as soon as it arrived. 消息一到就会转给他的。
He told us that the new railway would be built the next year. 他告诉我新铁路将在明年修建。
5.现在完成时的被动语态构成:(has/have been done)如:The work has just been finished. 工作刚刚结束。
The old rules have been done away with by us. 旧规章已经被我们废除了。
6.过去完成时的被动语态构成:(had been done)如:By last December three ships had been built by them. 到去年十二月底他们已建造了三艘船。
【中考英语复习 知识清单】专题14-被动语态(解析版)
专题14-被动语态2023年中考英语知识清单(通用版)目录考情分析: (1)1. 被动语态的结构 (1)2. 主动语态与被动语态的转换 (2)3. 含有情态动词的被动语态 (2)4.含有双宾语的主动语态变为被动语态 (2)5.含有短语动词的主动语态变为被动语态 (3)6.带有复合宾语的主动语态变为被动语态 (3)7.变被动语态的其他注意点 (3)8.牛刀小试 (4)考情分析:中考要求掌握:动词的主动语态和被动语态区别与使用,不同时态的被动语态形式及情态动词的被动语态形式。
英语动词有两种语态:主动语态和被动语态,主动语态表示句子的主语是谓语动作的执行者;被动语态是表示句子的主语是谓语动作的承受者。
如:We often clean the blackboard.(我们是擦黑板的执行者即主动语态)The blackboard is often cleaned by us. (黑板是clean的承受者即被动语态)。
1. 被动语态的结构一般现在时:am / is / are + 及物动词的过去分词一般过去时:was / were + 及物动词的过去分词一般将来时:will / shall be + 及物动词的过去分词现在完成时:have / has been + 及物动词的过去分词现在进行时:am / is / are being + 及物动词的过去分词过去完成时:had been + 及物动词的过去分词如:You are wanted on the phone.有你的电话。
China was liberated in 1949.1949年中国解放。
The problem will be discussed tomorrow.明天将对这个问题进行讨论。
Not a book in the library has been taken away.图书馆里没有一本书被人拿走。
My bike is being repaired.我的自行车正在修理。
各种时态的被动语态
各种时态的被动语态各种时态的被动语态一、八大时态的被动语态的构成:1.一般现在时的被动语态构成:(am/is/are +done)如:I am asked to study hard. 我被请求努力学习。
This shirt is washed once a week. 这件T恤一周洗一次。
These songs are usually sung by boys. 这些歌曲通常是男生唱的。
2.一般过去时的被动语态构成:(was/were done)如:The soldier was killed, but the train was saved. 这位战士牺牲了,然而列车得救了。
Some notes were passed up to the speaker. 有人给讲演者递上来一些纸条。
3.一般将来时的被动语态构成:(shall/will be done)如:We shall be asked a lot of strange questions. 我们将被问许多怪题。
My son will be sent to school next September. 来年九月我将送我儿子去读书。
4.过去将来时的被动语态构成:(should/would be done)如:The news would be sent to him as soon as it arrived. 消息一到就会转给他的。
He told us that the new railway would be built the next year. 他告诉我新铁路将在明年修建。
5.现在完成时的被动语态构成:(has/have been done)如:The work has just been finished. 工作刚刚结束。
The old rules have been done away with by us. 旧规章已经被我们废除了。
被动语态的用法
被动语态的用法被动语态的用法学习被动语态的几个问题被动语态是动词的一种特殊形式,表示句子中的主语是动作的承受者,汉语往往用“被”、“受”、“给”等词来表示被动意义。
1. 被动语态的各种时态被动语态(The Passive Voice)是动词的一种形式,表示主语是谓语动词的承受者。
被动语态便于论述客观事实,故常用于科技文章、新闻报道、书刊介绍以及景物描写。
被动语态没有将来进行时、过去将来进行时和完成进行时形式。
1)一般现在时The boy is called Johnson.friend.(3)主动语态中若有双宾语,将其中一个宾语变为被动句的主语,另一个宾语不变。
动词make/buy/mend/get用for;动词give/show/pass/send/lend/bring/take用to) Vivian gave me a book.(被动1) I was given a book by Vivian.(被动2) A book was given to me by Vivian. (4)主动语态若有复合宾语,(即句子结构为主+Vt+宾+宾补),将主动句的宾语变为被动句的主语,宾补不变。
They call him Louis.被动语态:He is called Louis.(5)主动语态句中动词make, have, let(使sb做sth), notice. see. watch, look at, hear, listen to, feel等变成被动语态时,后面的不定式需要加上to.Mr. Lee made him wash the dishes.被动语态:He was made to wash the dishes. (6)主动形式表被动.The poem reads well.(7)有些动词不能用于被动语态takeplace/happen/come true/break down/break out 等。
8种时态的被动语态
动词的语态:主动语态和被动语态被动语态的基本结构:Be + done(过去分词)1、一般现在时:(主动语态)I help you.发出者动词承受者变为被动语态:Do——am/is/are doneYou are helped by me.承受者谓语发出者2、一般过去时的被动:did——was/were done(I helped you.-每个例子可让学生自己先尝试变被动,再给答案)3、一般将来时的被动:Will do——will be done(I will help you.-)4、现在进行时的被动:Am/is/are doing ——Am/is/are being done(I am helping you.-)5、过去进行时的被动:Was/were doing——Was/were being done(I was helping you.-)6、现在完成时的被动:Have done——have been done (I have helped you.-)7、过去完成时的被动:Had done——had been done (I had helped you.-)8、过去将来时的被动:Would do ——would be done (I would help you.-)答案:2、You were helped by me.3、You will be helped by me.4、You are being helped by me.5、You were being helped by me.6、You have been helped by me.7、You had been helped by me.8、You would be helped by me.。
英语的主动语态和被动语态
主动语态和被动语态一、被动语态的用法:1. 一般现在时的被动语态构成: is / am / are + 及物动词的过去分词Our classroom is cleaned every day. 我们教室每天都被打扫。
I am asked to study hard. 我被告知要努力学习。
Knives are used for cutting things. 刀是用来切东西的。
2. 一般过去时的被动语态构成: was / were + 及物动词的过去分词A new shop was built last year. 去年修了一座新商店。
Dinosaur eggs were laid long long ago. 恐龙蛋被放置了很久很久。
3. 一般将来时的被动语态构成:will+ be + 及物动词的过去分词A new hospital will be built in our city. 我们城市将要修建一家新医院。
Many more trees will be planted next year. 明年会种更多的树。
4. 现在进行时的被动语态构成: am / is / are + being + 及物动词的过去分词 Uncle Wang is mending my bike now.→ My bike is being repaired by Tom now. 王叔叔正在修理我的自行车。
They are planting trees over there. → Trees are being plant ed over there by them. 他们在那里种植的树木。
5. 现在完成时的被动语态构成:has / have + been + 及物动词的过去分词 This book has been translated into many languages. 这本书被翻译成多种文字。
Many man-made satellites have been sent up into space by many countries. 在许多国家有许多人造卫星被送上了太空。
现在完成时被动语态(1)
B.have been shown
C.were shown
D.will be shown
解析: 考查时态及语态。由时间状语till now “直 到现在”可知用现在完成时,又因film与show之间是 被动关系,故用现在完成时的被动语态。
答案: B
4.Every possible means________to save the
答案: has been translated
Ⅱ.单项填空
1.—Is the meeting held in Room 302 or 303?
—It should be 302.But I hear that it________till
tomorrow.
A.was put off
B.will put off
点津:这类动词的否定式可表示动作的持续过程,具 有持续性,因而可与since或for构成的时间状语连用。
(2010·福建卷)Every year a flood of farmers
arrive in Shenzhen for the moneymaking jobs
they________before leaving their hometowns.
A.had changed
B.will change
C.was changed
D.has been changed
解析: 考查动词时态、语态。句意为:尽管我们不 知道讨论的内容,但我们能感觉到讨论的话题变了。 根据题意,句子应用被动结构,排除A项和B项,又根 据时态一致,排除C项。
答案: D
Ⅰ.用所给词的适当形式填空
7.Since the cause of this disease________ ________ ________(discover),now we need to develop the
人教版新教材必修二unit3 The computer 语法:现在完成时的被动语态用法讲解
人教版新课标必修二Unit3 The computer语法现在完成时的被动语态用法讲解【学习目标】1.现在完成时被动语态的结构2.现在完成时被动语态的主要用法3.使用现在完成时的被动语态需要注意的问题【课前预习】1.什么是语态?语态是表示主语和动词之间的主动关系或被动关系的动词形式。
英语动词有两种语态:主动语态和被动语态。
主动语态表示主语是动作的执行者(施动者),被动语态表示主语是动作的承受者(受动者)。
2.对现在完成时被动语态的理解现在完成时被动语态的结构就是现在完成时态和被动语态结构的叠合,即“have + been + 动词过去分词”。
试比较以下几组句子的谓语结构:1)主动句:He has repaired the machine for two hours. 他修理这台机器已有两小时了。
被动句:The machine has been repaired for two hours. 这台机器已修了两小时了。
2)主动句:The teacher has borrowed the books. 老师把那些书借走了。
被动句:The books have been borrowed by the teacher. 那些书被老师借走了。
【教学过程】一、现在完成时被动语态的构成1.现在完成时被动语态的肯定式由“have /has +been +及物动词的过去分词”构成。
例如:Two windows have been broken.两个窗子被打破了。
2.现在完成时被动语态的否定式由“have /has +not+been +及物动词的过去分词”构成。
例如:The car has not been repaired.这辆汽车还没有修好。
3.现在完成时被动语态的一般疑问式由“Have/Has +主语+been+及物动词的过去分词”构成。
例如:①─Has her work been finished?她的工作完成了吗?─Yes,it has.是的,完成了。
五种常用时态的被动语态
五种常用时态的被动语态:1)一般现在时的被动语态:am/is/are + doneThe house is cleaned by my mother every morning.我妈妈每天早上都打扫房子。
2)一般过去时的被动语态:was/were + doneI was beaten by someone last night.我昨晚被人打了。
3)一般将来时的被动语态:will be + doneThis boy will be expelled from the football team tomorrow.这个男孩明天将被开除出足球队。
4)完成时的被动语态:has/have/had been + doneNew Concept English has been translated into many languages.《新概念英语》已经被翻译成了许多种语言。
5)进行时的被动语态:be being + doneMy bicycle is being repaired by a garage.我的自行车正在一家修理厂里维修。
标题Not for jazz总结for的用法:1)为:I bought a book for you.我为你买了一本书。
2)因为:Something fell in,for I heard a splash.一定有东西掉下去了,因为我听见扑通一声。
4)适合:Not for jazz=It's not suitable to play jazz on the clavichord.古钢琴不适合演奏爵士乐。
Question:What happened to the clavichord?to后面加宾语,表示其身上发生了什么事,即动作的目标、对象。
What happened to you?你怎么了?(在你身上发生了什么事?)(1)否定句与疑问句的被动语态We don’t believe her.我们不信她的话。
被动语态在将来时、现在完成时和进行时中的应用(讲义)
被动语态在将来时、现在完成时和进行时中的应用(讲义)高中英语被动语态在将来时、现在完成时和进行时中的应用1. 通过学习本课,能够全面掌握将来时、现在完成时和进行时中被动语态的构成。
2. 通过学习本课,能够初步使用将来时、现在完成时和进行时中的被动语态。
重点:将来时、现在完成时和进行时中被动语态的意义和构成。
难点:灵活运用各种时态的被动语态。
1. 被动语态是中学英语的基础语法之一,常结合各种时态同时考查被动语态,综合考查考生对时态和语态的掌握。
2. 在写作部分,被动语态的应用能避免一些不明确的信息,体现学生高超的语言运用的能力。
被动语态在将来时中的应用A new village for the athletes and all the stadiums will be built to the east of London.在伦敦东部将为运动员建立一个新的奥运村和所有的运动场。
New medals will be designed of course and…当然还会设计新的奖牌……一般将来时的被动语态表示主语是动作的承受者,且动作在将来发生。
1. 一般将来时被动语态的形式包括:肯定式:shall/ will + be +及物动词的过去分词否定式:should,可用来征求对方意见。
表示“必须”,意思相当于must或have to。
be going to be done 表示最近即将发生的动作或按计划将要发生的被动动作。
The work is to be done by Tom.这项工作将由汤姆来做。
What is to be done next?下一步该怎么办?The work is to be finished before lunch.这项工作必须在午饭前做完。
The new park is going to be opened to the public on National Day.新公园将于国庆节向公众开放。