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、lUnit 2 Wildlife protectionDiscovering Useful StructuresWhat do you know about wildlife protection?Step 1.Lead inOur planets wildlife is dying out at an alarming rate.Between 150 and 200 species are becoming extinct every day.African elephants are being hunted.Much is being done to protect wildlife.

2、What is being done to help them?What measures are being taken to help them?Step 2.PresentationTo report an ongoing event.What are the words in red used for?Our planets wildlife is dying out at an alarming rate.Between 150 and 200 species are becoming extinct every day.What measures are being taken t

3、o help them?African elephants are being hunted.Much is being done to protect wildlife.What is being done to help them?Step 2.PresentationWhat measures are being taken to help them?African elephants are being hunted.Much is being done to protect wildlife.What is being done to help them?现在进行时的被动语态现在进行

4、时的被动语态am/is/arebeingdoneWhat can you find?一、现在进行时的被动语态的构成be(am/is/are)being doneThe bridge is being built across the river this month.这个月人们正在建横跨这条河的桥。6It is reported that the water in the lake is not being protected now.据报道，这个湖里的水现在没有得到保护。Are the babies being taken care of by this nurse?这些婴儿正由这个护士照看

5、吗？Who is being trained for the coming English speech contest?为了即将举行的英语演讲比赛，谁正接受训练？肯定句否定句一般疑问句特殊疑问句二、现在进行时的被动语态的结构主语be(am/is/are)being done主语be(am/is/are)not being donebe(am/is/are)主语being done特殊疑问词be(am/is/are)主语being doneThe workers are building the house._Someone is hunting African elephant._They

6、are hunting Tibetan antelopes._Where is a modern school being builtis being builtisnt being builtIs a modern school being built即时训练1根据要求转换句子They are building a modern school in his hometown.A modern school _in his hometown.(改为被动语态)A modern school _in his hometown.(改为否定句)in his hometown？(改为一般疑问句)_？(对

7、句中的in his hometown进行提问)11三、现在进行时的被动语态的用法1表示_的动作，句中常用now，at the moment等时间状语。A new film is being shown in the theatre.Lets go to see it.电影院里正在放映新电影呢，咱们去看吧。2表示_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。此刻正被进行现阶段正被进行123表示一种_行为，常和always，con

8、stantly，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 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。4表示按计划或安排主语_承受谓语动词所表示的动作。A party is being held tonight.今晚将要举行一场晚会。5与部分情态动词连用，表示_.He may be being scolded by his father at the very moment.此刻他也许正被他父亲责骂。经常性的被动将

9、要对正在发生的动作的推测13is being discussedbeing praisedis being made即时训练2用所给动词的适当形式填空The little boy has made rapid progress recently and is always _(praise)by his teachers.The plan to explore the South Pole _(make)these days.The question about where is the factory going to be built _(discuss)at the moment.14四

10、、使用现在进行时的被动语态应注意的问题1不可遗漏being现在进行时的被动语态中，be为第一助动词，being为第二助动词，缺一不可，且位置不可互换。此结构若缺少being，则就成为一般现在时的被动语态或系表结构。试比较：The report is being written by the best student.报告正在由一名最好的学生写着。The report is well written.这个报告写得很好。(系表结构)2不可遗漏介词take care of，look after，talk about，think of等动词短语用于现在进行时的被动语态时，其中的介词不可省略。Look！

11、The children are being taken care of by their aunt.瞧！那些孩子正由他们的姨妈照看着。153没有现在进行时的被动语态的动词非延续性动词、表示存在意义、所属关系、静态特征的动词以及系动词不用于现在进行时的被动语态。The book belongs to him.这本书是他的。4“be(am/is/are)under/inn.”结构有时可相当于现在进行时的被动语态。The bridge is in use.The bridge is being used.这座桥正在使用。16is under discussion/is being discusse

12、dare wanted即时训练3完成句子小王，过来，有你的电话。Xiaowang,come here.You on the phone.(want)这个问题正在会上讨论。The problem _at the meeting.(discussion/discuss)am being treatedis being typedare being doneDo the exercise.Step 3.Practice.单句语法填空1Your experiment report _(type)now and it will be finished soon.2Many interesting exp

13、eriments _(do)these days.3I _(treat)at the hospital now，so I cannot go to the cinema at present.are being doneis being repairedis being rebuiltare being cookedStep 3.Practice4Im sorry,sir.Your recorder isnt ready yet.It _ (repair)in the factory.5They are living with their parents for the moment beca

14、use their own house _(rebuild)6Wait a minute.The dishes for the dinner _(cook)in the kitchen.7So many things _(do)here to prevent air pollution now.is being usedis being builtare being lookedStep 3.Practice8A bridge (build)in the distance and its construction will be finished in a year.9These childr

15、en (look)after by an old man now.10The camera that (use)by him now belongs to me.is being gradedis being heldStep 3.Practice.句型转换1The teacher is grading the students schoolwork now.The students schoolwork now.2There is good news of the sports meeting being held in the city stadium these days.There i

16、s good news of the sports meeting which in the city stadium these days.is being questionedis being pollutedis under repairStep 3.Practice3The police have arrested a young man and they are questioning him now.A young man has been arrested and now.4The water in the lake is under pollution.The water in

17、 the lake 5We have to take another road because this road is being repaired.We have to take another road because this road is being punishedare being decoratedis being talkedis in useis being constructed6The boys and girls are decorating the classrooms.The classrooms by the boys and girls.7The men a

18、re talking about their future.Their future about by the men.8The manager is punishing the worker for his fault.The worker for his fault by the manager.9The library building is under construction in our school.The library building in our school.10This dictionary is being used at the moment.This dictionary at the moment.23Step 4.ProductionWhat do you know is being done in your neighborhood to protect animals and plants?What suggestions do you have?Discuss in groups and make presentation.单击此处添加副标题内容Thank You