Unit2 period 3 discovering useful structures-ppt课件（含音视频素材）-（2019）新人教版高中英语高一必修第二册.pptx

1、 Learn to know the structure of present continuous passive voice. Learn to use present continuous passive voice to describe the ongoing events. Learn to use present continuous passive voice to describe the endangered animals conditions and measures taken to help them.Review1. On the plain in front o

2、f us, we can just make out a herd of graceful animals.(Para. 1)2. They are being hunted illegally for their valuable fur.(Para. 2)3. To Zhaxi, the land is sacred and protecting the wildlife is a way of life.(Para. 3)4. Their habitats were becoming smaller as new roads and railways were built.(Para.

3、4)5. Zhaxi and other volunteers watched over the antelopes day and night to keep them safe from attacks.(Para. 5)6. The government, however, does not intend to stop the protection programmes, since the threats to the Tibetan antelope have not yet disappeared.(Para. 6)7. Only when we learn to exist i

4、n harmony with nature can we stop being a threat to widlife and to our planet.(Para. 7) Paraphrase them in groups. ReviewSimple（一般）Continuous（进行）Present（现在）do/doesTenseis/am/are doingPerfect（完成）Perfect continuous（完成）Past（过去）Future（过去）The past future（过去将来）have/has donehave/has been doingdidwas/were d

5、oinghad doneHad been doingwill/shall dowill/shall be doingwill/shall have donewill/shall have been doingshould/would doshould/would be doingshould/would have doneshould/would have been doingReviewChange the sentences into the passive form.Active voice(主动语态)Passive form(被动语态)(1) I take a book.(1) The

6、 book is taken by me.(2) He waters the flowers every day.(2) The flowers are watered by him every day.(3) The famers dont grow apples on the farm.(3) Apples are not grown by the farmers on the farm.(4) Can we put our bikes here?(4) Can our bike be put here?(3) What measures are being taken to help t

7、hem?(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 functionLead-inHunters are hunting African elephants.What are people doing to help them?What measures are people taking to help them?Change t

8、hem into active voice.Find more sentences with the same verb form in this unit.(P16 Paragraph 2)They are being hunted, illegally, for their valuable fur. (P16 Paragraph 7)Much is being done to protect wildlife.Lead-inBooksare beingreadby students.Lead-ine.g. African elephants are being hunted.Object

9、am/is/are beingVpp(by +Subject)+Make sentencesChoose the suitable verb form.1Im (working/being worked) at home today because my office is (painted/being painted).2The alarming report is (written/being written). It will be finished soon.3What part of the city is (attacked/being attacked) now?4Right n

10、ow the deer are (watched/being watcher) over by many volunteers.5Who is (hunting/being hunted) the kangaroos? Where are they (hunted/being hunted)?6It is reported that living spaces for wildlife are (reduced/being reduced) due to the cutting of trees.Activity 1Activity 1am/is/are being doneam/is/are

11、 doingam/is/are done现在进行时的被动语态现在进行时的主动语态一般现在时的被动语态Comprehension checkChange the sentence into the passive form. Present continuous tense(现在进行时) Present continuous passive tense(现在进行时被动语态)(1) I am reading a book.(1) The book is being read by me.(2) They are hunting a dear.(2) The dear is being hunt b

12、y them.(3) Tom is playing the guitar.(3) The guitar is being played by Tom.Activity 1What is the area called?What can you see?Activity 2wetlandWhat are the functions of wetland?Activity 21. Provide habitats for wild animals and plants; 2. Protect and improve water quality;3. Enhance air quality; 4.

13、Serve as a recreation(娱乐娱乐) area for people to relax;What is happening to the wetland?Activity 2Liu Tao expressed his concern over the wetland in his hometown. Read and fill in the blanks. In the wetland of my hometown, there are many different kinds of animals, including wild birds, fish, snakes, i

14、nsects 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 change in recent years . .Activity 2Activity 2uWhat is happening to the small birds in the wetland?uWhat is happ

15、ening to the wild ducks?uWhat is happening to the fish and snakes?Question & AnswerSmall birds _ (catch) with nets.are being caughtWild ducks _ (sell) at food markets. are being soldFish and snakes _ (kill) for food in restaurants. are being killedActivity 2uWhat is happening to the wetland?uWhat do

16、 you think should be done to protect the wetland?The wetland _ (destroy). Some parts _ (cover) with new house. You can see rubbish everywhere. The wetland _ (pollute) seriously every day.are being destroyedare being coveredis being pollutedQuestion & AnswerDiscuss in groups and prepare to give a pre

17、sentation of your ideas to the class.A: What do you know is being done in your neighbourhood to protect animals and plants?B: Well, the old trees in the park are being protected.A: Oh yes. They are being protected not only because they are the natural habitat for songbirds.C: Thats right. Perhaps th

18、ey could help protect the birds by making the roads around the park free from cars.D: Yes, that would certainly help make the air cleaner for them PresentationFor example:What suggestions do you have?SummaryObjectam/is/are beingpast participle(by +Subject)+The present continuous passive voice:Practi

19、ce(P22)Read and complete the passage with the present continuous passive voice of the verbs in brackets.It may seem that protecting wildlife is something far from the life of a high school student, but in fact, a lot _ (do) by young people around the world. In Washington State, USA, wolverines (貂熊)

20、_ (study) by scientists in an effort to learn how to preserve the population. However, during the winter, its difficult to attract the animals to cameras hidden in snowy forests. A group of students heard about the problem and created a special device which _ (test) deep in a snowy forest now. Their

21、 invention _ (use) to send out a certain smell near the cameras. The shy animals are attracted by the smell and coming around the cameras. They _ (observe) by a conservation researcher.is being doneare being studiedis being testedis being usedare being observedPractice(P68)1. is being built2. are be

22、ing discussed3. is being done4. are being taken5. am being told6. is being fixed7. are being threatenedPractice(P68)1. A new area is being opened for the two baby elephants (by the zoo). 2. The patient is not being examined (by the doctors).3. More funds are being raised for research into wildlife p

23、rotection. 4. A new nature reserve is being set up for endangered animals (in/by the city).5. Today our writing task is being completed online.Practice(P69) is being threatenedare being drivenare being endangeredare being destroyedis also being usedis being producedcreatedis being affected is still being doneare being designedPractice(P69)EABCDHomeworkPrepare to give a presentation of your ideas next class. What do you know is being done in your neighbourhood to protect animals and plants? What suggestions do you have?