Unit 2 Discovering Useful Structures （ppt课件）-2022新人教版（2019）《高中英语》必修第二册.pptx

1、Unit 2 Wildlife Protection Discovering Useful Structures(3)What measures are being taken to help them?(2)What is being done to help them?(1)African elephants are being hunted.Underline the present continuous passive voice in the sentences and discuss its functionHunters are hunting African elephants

2、.What are people doing to help them?What measures are people taking to help them?定义：表示“某人/事此时此刻正在被”，主语是动作的承受者,表示说话时或现阶段某个被动的动作正在进行。1.定义定义2.2.结构结构 1）肯定形式：am/is/arebeing过去分词The house is being painted.2）否定形式:am/is/arenotbeing过去分词The trees are not being watered.3）疑问形式:Am/Is/Are主语being过去分词？Am I being wat

3、ched over?4）特殊疑问句的形式:把特殊疑问词放在一般疑问句前面。How many bridges are being built in the village?1.The plan _ this month.计划本月正在执行。2.Your computer _ now.现在没人修理你的电脑。3._ these fields _ this week？这周有人在给这些地浇水吗？4.Where _ you _ now？现在你们在哪里接受面试？is being carried outis not being repairedArebeing wateredarebeing interview

4、ed3.3.主动语态变被动语态的原则主动语态变被动语态的原则“三变”例：They are building nine parks.原句主语变为by短语宾语变为主语 谓语由主动变为被动“三不变”原句意思不变 原句时态不变 原句主谓宾以外成分不变Nine parks _ by them.How many parks _?are being builtare being built例：1.Mary _ (interview)now.2.Look!The baby _(take care of)by her aunt.3.The disease _(study)at present by scient

5、ist.4.现在进行时的被动语态基本用法：现在进行时的被动语态基本用法：1.表示此刻正被进行的动作，句中常用now，at the moment等时间状语。is being taken care ofis being studiedis being interviewed2 2表示现阶段正被进行的动作，但此动作在此时此刻不一定正在发生。Could I use your car please?Mine is being repaired by the workers.我能用你的车吗？我的车正在被工人们修着。3.少数及物动词的进行时表示按计划、安排将要承受某个动作。例：1.今晚将要举办一场晚会。An

6、 party _(held)tonight.2.下面将唱一首民歌。A folk song _(sing)next.3.据说下周日早上八点他将开飞机去。It is said that a plane_(flow)by him to America at eight next Sunday morning.is being heldis being sungis being flown4 4表示一种经常性的被动行为，常和always，constantly，frequently等表示频率的副词连用，这种用法常常带有说话者的赞扬或厌恶的感情色彩。I feel very puzzled that the

7、 goods in our shop are always being stolen.我感到很迷惑，我们商店的商品老是被偷。5 5与部分情态动词连用，表示对正在发生的动作的推测。He may be being scolded by his mother at the very moment.此刻他也许正被他妈妈责骂呢。6.没有进行时的被动语态一些表示状态、心理活动、拥有、存在等的动词(和主动语态一样)一般不用进行时被动语态,常用一般现在时被动语态表示此时此刻或目前主语承受谓语动词的动作。【练习】判断正误。小王,过来,有你的电话。Xiao Wang,come here.You arebeingw

8、antedon the phone.Xiao Wang,come here.You arewanted on the phone.is being used is being constructed7.表示被动结构“be+under/in等介词+名词”结构可替换进行时被动语态。is being attackedThe city is under attack at the moment.The bridge is under construction.The bridge is in use.Practice1 Choose the suitable verb forms to complet

9、e the sentences.1.Im(working/being worked)at home today because my office is(painted/being painted).2.The alarming report is(written/being written).It will be finished soon.3.What part of the city is(attacked/being attacked)now?4.Right now,the deer are(watched/being watched)over by many volunteers.5

10、.Who is(hunting/being hunted)the kangaroos?Where are they(hunted/being hunted)?6.It is reported that living spaces for wildife are(reduced/being reduced)due to the cutting of trees.In the wetland of my hometown,there are many different kinds of animals,including wild birds,fish,snakes,insects and so

11、 on.When I was in primary school,I often went there with my friends to watch the birds and study them.That was an interesting place for all of us.But things have begun to change in recent years.Small birds _(catch)with nets.Wild ducks _(sell)at food markets.Fish and snakes _(kill)for food in restaur

12、ants.And even worse,the wetland _(destroy).Some part_(cover)with new houses.You can see rubbish everywhere.The wetland _(pollute)seriously every day.I am very woried about it.What can we do?are being caughtare being soldare being killedis being destroyedis being pollutedare being covered 1.1.现在进行时的被

13、动语态的基本结构现在进行时的被动语态的基本结构肯定结构be(am/is/are)being done否定结构be(am/is/are)+not+being done一般疑问结构be(am/is/are)+主语+being done特殊疑问结构特殊疑问词+be(am/is/are)+主语+being doneSummary（1）表示现在正在进行的被动动作。（2）少数及物动词的进行时表示按计划、安排将要承受某个动作。(3)没有进行时的被动语态(4)表示被动结构“be+under/in等介词+名词”结构可替换进行时被动语态。2.2.现在进行时的被动语态的基本用法现在进行时的被动语态的基本用法Exer

14、cises 用所给动词的适当形式填空1 History is _ by the people.(make)2 Some trees _ on the hill now.(plant)3 A new subway _(build)next year.4 She _(take)to the hospital already.5 Thousands of satellites _(send)up into the space so far.6 Notes _(take)by you right now.7 Young trees should _(water)often.madewill be bu

15、ilthas been takenhave been sentare being takenbe wateredare being planted1.关于在哪儿建厂的问题正在被讨论。The question about where is the factory going to be built _ now.2.正在设计一个保护自然资源的项目。A project about protecting the natural resources _3.受到攻击时应保持冷静。You should stay cool when you _4.我感到很迷惑，我们商店的商品老是被偷。I feel very puzzled that the goods in our shop _is being discussedis being designedare being attackedare always being stolenBye-bye!