Unit 2 Discovering Useful Structures ppt课件-（2019）新人教版高中英语必修第二册 (1).pptx

1、Unit 2 语法精讲The structure of present continuous passive voiceSimple（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 doinghad doneHad been doingwill/shall dowill/shall be doingwil

2、l/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 book is taken by me.(2) He waters the flowers every day.(2)

3、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?Booksare beingreadby students. African elephants are being hunted.Objectam/is/are beingpast participle(b

4、y +Subject)+ 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 by them.(3) Tom is playing the guitar.(3) The guitar is being played by Tom.1.定义表示“某人/事此时此刻正在被”，主语是动

5、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. Pandas are being protected in Wolong National Reserve.2. A modern school is being built for the students these months.3. A Christmas party is being held tonight.4. Tom is always being praised by the teacher.说话时说话时正在进行的被动动作正在进行的被动动作现阶段现阶段正在进行的被动动作正在进行的被动动作按计划或安排按计划或安排将将

6、要进行的一个被要进行的一个被动动作动动作经常经常的被动行为的被动行为2.句型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 watched 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. A new cinema_ (

7、build) here now.2. A lot of tall buildings _ (set) up, and people will move next year. 3. The disease _ (study) by scientists at present. 4. Water _ (boil) at 100. 5. pandas _ (disappear) in our country year after year.6. The patient _ now. He will come out soon.is being builtare being setare being

8、studiedboilsis being examinedare disappearingChoose 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). It will be finished soon.3. What part of the city is (attac

9、ked /being attacked) now?4. Right now, the deer are (watched/being watched) over by many volunteers.5. 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.Liu Tao w

10、ould 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.湿地，沼泽地In the wetland of my hometown, there are many different kinds of animals, including wild birds, fish, snakes, insects and so on. Whe

11、n 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 re

12、staurants. 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 woried about it. What can we do?are being caughtare being soldare being killedis being destroyedis being pollutedare being

13、 covered1. Every year over 29,000 antelopes _ (kill) in Tibet.2. In the past, the elephants _ (kill) by farmers.3. In the past twenty years, a large number of bamboo areas _ (set up) to help pandas grow.are killedwere killedhave been set up一般现在时被动语态一般现在时被动语态一般过去时被动语态一般过去时被动语态现在完成时被动语态现在完成时被动语态4. At

14、present a new home _ (build) for pandas.is being built现在进行时被动语态现在进行时被动语态拓展5. WWF hopes that more and more wild animals _ (protect) in the future.将来时被动语态将来时被动语态will be protected6. Lily just told me Jack _ (fire) since last month.had been fired7. My homework _ when you arrive tomorrow.will have been finished过去完成时被动语态过去完成时被动语态将来完成时被动语态将来完成时被动语态Thank you