Unit 2 Discovering Useful Structures （ppt课件）-2023新人教版（2019）《高中英语》必修第二册.pptx

1、Wildlife ProtectionUnit 4Period 3 Discovering Useful StructureThe Present Continuous Passive VoicePlay gamesWhat are they doing now?A house by the workers.The workers are building a house.is being built The Present Progressive Passive VoiceWere being killed for the wool beneath our stomachs.And our

2、fur is being used to make sweaters for people like you.We are being hunted for our ivories.例句探究规律 1.Do you know any other endangered wildlife in China that is not being protected?2.Were being killed for the wool beneath our stomachs.3.Is their fur being used to make sweaters for people like you?4.Wh

3、at good things are being done here to save local wildlife?结构：结构：_am/is/are being+done A basketball is being played by Miki.A book is being read by the girl.Our fur is being used to make sweaters for people like you.小结小结：Present Progressive Passive VoicePresent Progressive Passive Voice 现在现在进行时的被动语态进

4、行时的被动语态主语主语+am/is/are+being+done 1.She is being treated in China now.2.My computer is being repaired now.我的电脑正在修理中。notnotnot Am/Is/Are+主语主语+being+donee.g:1.Are these books being sent to Beijing？2._?Is the wall being painted疑问词When How Where Why What 3._?When is the wall being painted表示表示说话时说话时正在进行的被

5、动动正在进行的被动动作作.(right)now,at the moment,at present)Actions are being taken to realize Chinese Dream.Present Progressive Passive Voice表示表示现阶段现阶段正在进行的被动动作正在进行的被动动作.(说话时不一定在进行说话时不一定在进行)The problem of food safety is being studied by scientists at present.Present Progressive Passive Voice表示一种表示一种习惯的被动行为习惯的

6、被动行为(always,constantly),带有赞扬、羡慕、讨厌等感情色彩。带有赞扬、羡慕、讨厌等感情色彩。Children of our neighbors are always being praised by our parents.与某些与某些情态动词情态动词连用表示对正在发生的动作进行连用表示对正在发生的动作进行推测推测As a result of staying up late talking last night,Jimmy may be being scolded by his headteacher.现在现在进行时的被动语态的基本结构进行时的被动语态的基本结构肯定结构肯定

7、结构be(am/is/are)being done否定结构否定结构be(am/is/are)+not+being done一般疑问结构一般疑问结构be(am/is/are)+主语主语+being done特殊疑问结构特殊疑问结构特殊疑问词特殊疑问词+be(am/is/are)+主语主语+being done1.像像take care of,look after,talk about,think of等动词与介词构成的短语用等动词与介词构成的短语用于现在进行时的被动语态时于现在进行时的被动语态时,其中的介词不可省略。其中的介词不可省略。The ways to stop illegally hun

8、ting are being talked about.阻止非法捕猎的方法正在研讨中。2.“be(am/is/are)+under/in+n.”有时可相当于现在进行时的被动语态。有时可相当于现在进行时的被动语态。Many questions are under discussion.=Many questions are being discussed.许多问题正在被讨论。3.有时表有时表“状态状态,心理活动心理活动,情感情感”等的动词等的动词,常用在一般现在时的被常用在一般现在时的被动语态表示动语态表示“正在进行正在进行”。The runaway of the traffic acciden

9、t is wanted by the police.警方正在通缉交通事故的逃逸者警方正在通缉交通事故的逃逸者。The plan is being discussed at the meeting now.现在这个计划正在讨论过程中。现在这个计划正在讨论过程中。A new law is being made to prevent endangered animals from extinction.为了为了阻止濒危动物的灭绝新的法律正在制定中阻止濒危动物的灭绝新的法律正在制定中。Workers are cutting down some trees in the park.Some trees

10、are being cut down by workers in the park.(被动语态)Where are some trees being cut down by workers?(特殊疑问句)用用所给动词的适当形式填空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 _(sen

11、d)up into the space so far.6 Notes _(take)by you right now.7 Young trees should _(water)often.madeare being plantedwill be builthas been takenhave been sentare being takenbe watered 9.The grammar which _(learn)now is easy to master.10.Some animals _(protect)well enough now.11.The sports meeting _(ho

12、ld)in our school at present.12.My washing machine _(repair)this week,so I have to wash my clothes by hand.13.Now similar concerns _(raise)by the giants that deal in data,the oil of the digital age.14.Look!She _(criticize)by the teacher in the office.15.The sports meeting _in our school now.is being

13、learnedare being protectedis being heldis being repairedare being raised is being criticizedis being heldPractising Liu Tao would like to express his concern over the wetland in his hometown.Help him finish the passage with the present continuous passive voice of the verbs in brackets on Page 18,Act

14、ivity 3.In the wetland of my hometown,there are many different kinds of animals,including wild birds,fish,snakes,insects and so 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 ch

15、ange in recent years.Small birds_(catch)with nets.Wild ducks_(sell)at food markets.Fish and snakes_(kill)for food in restaurants.And even worse,the wetland _(destroy).Some parts_(cover)with new houses.You can see rubbish everywhere.The wetland _(pollute)seriously every day.I am very worried about it

16、.What can we do?are being caughtare being soldare being killedis being destroyedare being coveredis being pollutedComplete the sentences with the correct forms of the given verbs on Page 68,Activity 1,Workbook.PractisingComplete the sentences with the correct forms of the given verbs on Page 68,Acti

17、vity 1,Workbook.1.A new library _ (build)in our school.It will open next year.2.Conservation programmes for wild animals _(discuss)in Australia now.3.What _(do)in your town to protect local wildlife?4.Dont worry.Measures _(take)to stop such a thing from happening again.5.I _ (tell)that my ID and pas

18、sword are not working.What should I do now?6.Mum,my computer _ (fix).Can I use yours for a while?7.It is believed that many plant species _(threaten)with extinction.Practisingis being builtare being discussedis being doneare being takenam being toldis being fixedare being threatenedRewrite the sente

19、nces using the present continuous passive voice on Page 68,Activity 2,Workbook.1.The zoo is opening a new area for the two baby elephants.A new area is being opened for the two baby elephants(by the zoo).2.The doctors are not examining the patient.The patient is not being examined(by the doctors).3.

20、They are raising more funds for research into wildlife protection.More funds are being raised for research into wildlife protection.4.The city is setting up a new nature reserve for endangered animals.A new nature reserve is being set up for endangered animals in/by the city.5.Today we are completin

21、g our writing task online.Today our writing task is being completed online.PractisingRead and complete the passage about wildlife protection with the correct verb forms in brackets on Page 69,Activity 4,Workbook.PractisingThe balance of nature on our planet _ (threaten)as a large number of species _

22、(drive)to extinction.Some scientists predict that half of all our plants and animals will be extinct by 2100.The question is why these species _ (endanger).One of the main reasons is loss of habitat.Animal habitats _ (destroy)as humans search for more natural resources to consume(消费).More land _(als

23、o use)for growing crops or keeping livestock(家畜).In addition,massive amounts of waste _(produce)by humans,which are polluting animal habitats.Harmful chemicals _(create)by human activities are being released into the air,water,and soil.The whole of nature _ (affect)by human beings.However,much has b

24、een done and _ (still do)to save endangered species.Many programmes _ (design)to preserve the populations of endangered species.In my opinion,there is still hope that humans can live in harmony with all things on the earth.is being threatenedare being drivenare being endangeredare being destroyedis also being usedare being produced createdis being affectedis still being doneare being designed“三变三变”原则原则:原主变为by短语，原宾变为现主语；谓语主动变被动。“三不变三不变”原则原则:原句意思不变，原句时态不变；原句主谓宾以外成分不变。Thank you