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

1、deerkangarooreduceduedue toinsectnetneighbourhoodn. 鹿鹿n. 袋鼠袋鼠vt. 减少减少adj. 由于；因为由于；因为由于；因为由于；因为 n. 昆虫昆虫 n. = Internet; 网网adj. 净得的；纯的净得的；纯的n. 临近的地方；街区临近的地方；街区Report an ongoing eventUnit 2 Discovering Useful Structures英语动词有两种语态：英语动词有两种语态： 主动语态主动语态 (the Active Voice) 被动语态被动语态(the Passive Voice)A. 主动语态表示

2、主语是动作的主动语态表示主语是动作的执行者执行者。B. 被动语态表示主语是动作的被动语态表示主语是动作的承受者承受者。We planted the tree.The tree was planted by us.The Structure is助动词助动词be+及物动词的过去分词及物动词的过去分词 (be+done) A wild horse is being hunted after by a tiger.Jackson is being interviewed now.Toms car is being repaired now. The disease is being studied

3、at present by scientists.1. A wild horse _ by a tiger.2. Jackson _ now.3. Toms car _ now. 4. The disease _ at present by scientists.5. African elepants _.6. What _ to help them?7. What measures _ to help them?8. They _, illegally, for their valuable fur.9. Much _ to protect wildlife, are being hunte

4、dis being doneare being takenare being huntedis being doneis being hunted after is being interviewed is being repaired is being studied The Present Continuous Passive Voiceis used in these sentences. Its basic structure is:_.am/is/are + being + v-ed*定义；定义；*句型结构；句型结构；*用法；用法；* 特殊用法。特殊用法。Focus on 基本用法现

5、在进行时的被动语态现在进行时的被动语态 Were being killed for the wool beneath our stomachs. Our fur is being used to make sweaters for people like you.am/is/are + being + v-edam/is/are + not + being + v-ed The engineer is not being treated fairly. New nature parks are not being started in China.表示说话时或现阶段表示说话时或现阶段正在进行正

6、在进行的的被动动被动动作作，强调，强调主语主语是动作的是动作的承受者承受者。 Is the patient being examined by the doctor now? Is a computer center being built for the students?疑问词疑问词 + am/is/are + being+ v-ed？ Who is being filmed now? Why is the house being cleaned by you?疑问词疑问词 + am/is/are + 主语主语 + being + v-ed + 其他其他？Am/Is/Are + 主语主语

7、+ being + v-ed +其他其他？1.1.主语是主语是动作的承受者动作的承受者且且动作正在发生动作正在发生( (常有常有now, at present等标志词等标志词) )或持续或持续。A new teaching building is being built in our school.2.2.一种一种习惯的被动行为习惯的被动行为，常与，常与always, constantly 等等频度副词频度副词连用，常有赞赏或讨厌等连用，常有赞赏或讨厌等感情色彩感情色彩。I feel very surprised that the window of our classroom is freq

8、uently being broken.3.3.与某些与某些情态动词情态动词连用，表示对正在发生动作连用，表示对正在发生动作的的推测推测。The old man may be being watched over by a volunteer at the very moment.特殊用法：特殊用法：1.1.少数及物动词的被动语态可用少数及物动词的被动语态可用现在进行时表将现在进行时表将来来。 A popular song is being sung next. A party is being held tonight. 2.2.一一些表些表“状态、心理活动、情感、拥有、存在状态、心理活动、

9、情感、拥有、存在”等的动词等的动词, , 如如: :have, want, need, love, realize等，常用等，常用一般现在时的被动语态一般现在时的被动语态表示表示“正在进正在进行行”。 Mary, come here. You are wanted on the phone. With the population increasing, more land is needed.3.3.少数动词用于进行时态，用少数动词用于进行时态，用主动主动形式形式表示被表示被动动含义含义, , 如如: :print, cook, fry, bake, burn, hang These mag

10、azines are printing. The house is burning. The meat is cooking.4.4.某些某些“介词介词+ +名词名词”的短语也可以的短语也可以表示正在进行表示正在进行着的被动动作着的被动动作, , 常见的这些介词有常见的这些介词有: : on, under, in。 The castle is under attack at the moment. = The castle is being attached at the moment. Your questions are under discussion. = Your questions

11、 are being discussed. The computer is in use now. = The computer is being used now.Exercise1. 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 (attacked/being a

12、ttacked) 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 wildlife are (reduced/being reduced) due to the cutting of trees.Choose the suitable v

13、erb forms to complete the sentences.P18 2P18 3Liu 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.In the wetland of my hometown, there are many different kinds of animals, including

14、 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 change in recent years. Small birds _ (catch) with nets. Wild ducks _ (sell) at food

15、 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. What can we do?are being caughtare being soldare being k

16、illedis being destroyedare being coveredis being polluted1. 1. 定义定义: :表示说话时或现阶段表示说话时或现阶段正在进行正在进行的的被动动作被动动作，强调，强调主主语语是动作的是动作的承受者承受者。2. 2. 句型结构句型结构: :肯定句：肯定句：am/is/are + being + v-ed否定句：否定句：am/is/are + not + being + v-ed一般疑问：一般疑问：Am/Is/Are + 主语主语 + being + v-ed +其他？其他？特殊疑问句：特殊疑问句：疑问词疑问词 + am/is/are +

17、being+ v-ed？疑问词疑问词 + am/is/are + 主语主语 +being + v-ed + 其他？其他？3. 3. 用法：用法：( (1 1) )主语是主语是动作的承受者动作的承受者且且动作正在发生或持续动作正在发生或持续。(2)(2)一种一种习惯的被动行为习惯的被动行为，常与，常与always, constantly 等等频频度副词度副词连用，常有赞赏或讨厌等连用，常有赞赏或讨厌等感情色彩感情色彩。(3)(3)与某些与某些情态动词情态动词连用，表示对正在发生动作的连用，表示对正在发生动作的推测推测。4. 4. 特殊用法。特殊用法。.用现在进行时的用现在进行时的被动语态被动语态

18、改写下列句子。改写下列句子。 1. She is teaching the boy English.2. Now he is making the girl water the tree.3. They are writing a report about the negative effects of cell phones in school.4. She is making Tom a new coat.5. We are painting our classroom now.The boy is being taught English by her.Now the girl is b

19、eing made to water the tree by him.A report about the negative effects of cell phones inschool is being written by them.A new coat is being made for Tom.Our classroom is being painted by us now. Fill in the blanks. 1. My new house _ (paint), so I have to stay with my parents.2. Could you give me a l

20、ift this afternoon? My car _ (repair).3. At present, a concert _ (hold) in the new sports stadium.4. The problem of environmental protection _ (discuss) by the students at the moment. is being discussedis being painted is being repairedis being held 5. - I dont think the police know who did it. - We

21、ll, surprisingly they do. A man _ (question) now.6. A new car _ (design) by the engineers now.7. These days, the product _ (sell) in many supermarkets in Europe and Asia for a suggested price of $ 25.8. Would you please keep silent? The weather report _ (broadcast) and I want to listen.is being broadcastis being questioned is being designedis being sold