新人教必修二系列课 B2U2 Discovering Useful Structures.pptx

免费免费查查看看使使用用说说明明免费查看使用说明Wildlife Wildlife ProtectionProtection高中英语新人教版B2U2 DISCOVERING USEFUL STRUCTURESLearning ObjectivesBy the end of the class,you will be able to:1.Learn about the form and function of the present continuous passive voice-be being done;2.Learn to review and sum up the differences among being done,be doing and be done;3.Learn to report an ongoing event using the present continuous passive voice-be being done;4.Learn to describe the current situation of the endangered animals and the measures to help them using the present continuous passive voice-be being done.Warming upPA RT 1Wow,how cute these elephants are!As a reporter,I can share more with you,come with me!Look at these posters.Can you describe them?A tourist is patting the elephant.A tourist is riding on the elephant.An elephant is playing a tourists hat.Can we rewrite the sentences like these：1.The elephant _2.The elephant _ 3.A tourists hat _ is patted by a tourist.is ridden by a tourist.is played by an elephant.How about combining the two sentences together?We will get sentences like these:An elephant is being patted by a tourist.An elephant is being ridden by a tourist.A tourists hat is being played by an elephant.Discovering the rulesPA RT 2An elephant gently by a tourist.An elephant by a tourist.A tourists hat by an elephant.Lets read the sentences together and pay attention to the patterns in red.From the sentences above,we can conclude the structure of the present continuous passive voice:_+_ +_.The sentence pattern:_+am/is/are being+_(+by+subject)be beingpast participleobjectpast participleis beingpattedis being riddenis being playedStudying the rulesPA RT 3 One elephant_(feed)by its keeper,while the other _(give)any food now.is being fedTheseelephants_(bath)bytheirkeepers.are being bathedisnt being givenHowever,to the publics anger,the endangered Asian elephants _ always_(hunt)by illegal hunters.arebeing huntedTheir habitats _(destroy)and their normal life_.(disturb)are being destroyedis being disturbedTo our deep sorrow,elephants_(hunt)and their ivories _(sell)secretly on the black market.are being huntedare being soldSummarize the rules on your own.现在进行时的被动语态现在进行时的被动语态的结构肯定式：am/is/are+being+过去分词否定式：am/is/are+not+being+过去分词一般疑问式：Am/Is/Are+主语+being+过去分词现在进行时的被动语态的用法现在进行时的被动语态强调主语是动作的承受者，表示说话时正在进行着的被动动作、现阶段正在进行着的被动动作或将要发生的动作。eg :1.Recently the authority by the public for their efforts to protect Tibetan antelopes.2.To the publics anger,the endangered animals by illegal hunters.【拓展】现在进行时的被动语态与always,constantly等词连用时，表示经常性的被动动作，此时往往带有赞赏、厌恶等感情色彩。is always being praised are alwaysbeing huntedComplete the sentences with the correct forms of the given verbs.1.Anewlibrary_(build)inourschool.Itwillopennextyear.2.Conservationprogramsforwildanimals_always_(welcome)bythepublic.3.What_(do)inyourtowntoprotectlocalwildlife?4._measures_(take)tostopsuchathingfromhappeningagain?isbeingbuilt being welcomedisbeingdonebeingtakenAreareComplete the sentences with the correct forms of the given verbs.5.Mum,my computer _(repair).Can I use yours for a while?6.lt is believed that many plant species _(threaten)with extinction.7.My mobile phone _(charge)now,you can use it to make a phone call.is being repairedare being threatenedisnt being chargedSummarybe being done肯定式：主语+am/is/are+being done be always/constantly being done否定式：主语+am/is/are not+being done一般疑问式:Am/Is/Are+主语+being done 现阶段正在被进行的动作习惯性/经常性动作，表赞扬或者厌恶Applying the rulesPA RT 4Measures _ (take)by the local authority to protect the African elephants.are being takenThey _(take care)by the local residents.are being taken care ofTheir habitat_(rebuild)by the government.is being rebuiltThe authority _ always _(praised)by the public for their efforts to protect the endangered African elephants recently.isbeing praisedChoose the suitable verb forms to complete 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).Itll be finished soon.3.What part of the city is(attacked/being attacked)now?TIPS:1.Read the sentence carefully to make sure whether it is proper to use present continuous tense.2.Analyze the relationship between the subject and its verb to decide whether it is proper to use passive voice.4.When is the library usually(closed/being closed)?5.Right now,the deer are(watched/being watched)over by many volunteers.6.Who is(hunting/being hunted)the kangaroos?Where are they(hunted/being hunted)?7.Its reported that living spaces for wildlife are(reduced/being reduced)due to the cutting of trees.am/is/are doingam/is/are doneam/is/are being done表示正在发生的动作表示习惯性地被.表示现在正在被.现在进行时的主动语态现在时的被动语态现在进行时的被动语态Based on the exercises above,lets summarize the differences between be doing,be done and be being done in the present tense.Since the African elephants _(protect)well,their natural reserve _(rebuild),their needs _(meet)and effective measures _(take).I firmly believe everything will become better!Lets turn to paying attention to another neighbourhood issue about wetland.are being metis being rebuiltare being protectedare being takenwetlandIs the scenery fascinating?However,something terrible is being done to the wetland.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.It was an interesting place for all of us.But things have begun to change in recent years.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.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 _(polute)seriously every day.I am very worried about it.What can we do?are being caughtare being soldare being killedis being destroyedhave been coveredis being polluted1.Why does Liu Tao use present continuous passive voice in the 1.Why does Liu Tao use present continuous passive voice in the passage?passage?2.In what conditions can we use present continuous passive 2.In what conditions can we use present continuous passive voice when we are expressing our ideas?voice when we are expressing our ideas?Think and share.ConclusionPA RT 5Summarybe being done肯定式：主语+am/is/are+being done be always/constantly being done否定式：主语+am/is/are not+being done一般疑问式:Am/Is/Are+主语+being done 现阶段正在被进行的动作习惯性/经常性动作，表赞扬或者厌恶Homework You are encouraged to discover and share knowledge of local wildlife conservation,discussing opinions and solutions to prepare and deliver a presentation with the use of the form of be being done as much as possible.脑 洞 英 语 课 堂免费免费查查看看使使用用说说明明免费查看使用说明