《人教高中英语【新教材精创】2.3 Discovering Useful Structure 课件（2）-人教版高中英语必修第二册(共16张PPT).pptx》由会员分享，可在线阅读，更多相关《人教高中英语【新教材精创】2.3 Discovering Useful Structure 课件（2）-人教版高中英语必修第二册(共16张PPT).pptx（15页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、人教版英人教版英语语 必修第二册必修第二册 Unit 2 Wildlife Protection Unit 2 Wildlife ProtectionPeriod 3 Discovering Useful StructurePeriod 3 Discovering Useful Structure The workers are building the house.the workers.What are the workers doing？The house is being built by主语主语谓语谓语宾语宾语The workersare building the house宾语宾语
2、主语主语 谓语变被动谓语变被动 （时态不变）（时态不变）be+being+done+bySomeone is hunting African elephant.someone.African elephant is being hunted by主语主语谓语谓语宾语宾语Someone is hunting African elephant宾语宾语主语主语 谓语变被动谓语变被动 （时态不变）（时态不变）be+being+done+by()They are hunting Tibetan antelopes.them.Tibetan antelopes are being hunted by主语主
3、语谓语谓语They are hunting Tibetan antelopes宾语宾语主语主语 谓语变被动谓语变被动 （时态不变）（时态不变）be+being+done+by宾语宾语()Pandas are being protected in Wolong Natural Reserve.Summarize the structureFrom above the pictures,we can know that the structure of present continuous passive voice:be(am/is/are)+being+doneOther forms:肯定结构
4、否定结构一般疑问结构特殊疑问结构be(am/is/are)being donebe(am/is/are)notbeing donebe(am/is/are)主主语语being done特殊疑特殊疑问词问词be(am/is/are)主语being done1.The plan _ this month.(肯定句)计划本月正在执行。2.Your computer _ now.(否定句)现在没人修理你的电脑。3._ these fields _ this week？(一般疑问句)这周有人在给这些地浇水吗？4.Where _ you _ now？(特殊疑问句)现在你们在哪里接受面试？Examplesi
5、s being carried outis not being repairedArebeing wateredarebeing interviewedUsage/Functions1.表示此时此刻正在进行的被动动作。My sister is now being interviewed.2.表示现阶段正在进行的被动动作(该动作在说话的瞬间未必正在进行)。Many interesting experiments are being carried out these days.(说话时，并不一定正在进行)Usage/Functions3表示一种经常性的被动行为，常和always，constant
6、ly 等表示频度的副词连用，这种用法常常带有赞扬或厌恶的感情色彩。He is always being praised by the leader.4表示按计划或安排主语将要承受谓语动词所表示的动作(仅限于少数及物动词)。A party is being held tonight.Special cases1.像take care of,look after,talk about,think of等动词与介词构成的短语用于现在进行时的被动语态时,其中的介词不可省略。The ways to stop illegally hunting are being talked about.2可与部分情态
7、动词连用，表示对正在发生的事情的推测。She may be being punished by her mother.Special cases3有时可表示按计划或安排将要进行的一个被动动作。A celebration is being held this weekend for his success.4某些表示“状态、心理活动、存在”等的动词，如have，want，need，love，一般不用现在进行时的被动语态，而常用一般现在时的被动语态。With the population increasing，more land is needed.Special cases5“beunder/i
8、nn.”可表示现在进行时的被动意义。My computer is under repair.My computer is being repaired.1.关于在哪儿建厂的问题正在被讨论。The question about where is the factory going to be built _ now.2.正在设计一个保护自然资源的项目。A project about protecting the natural resources _3.受到攻击时应保持冷静。You should stay cool when you _4.我感到很迷惑，我们商店的商品老是被偷。I feel very puzzled that the goods in our shop _Practiceis being discussedis being designedare being attackedare always being stolen这条路正在被修建。Practice5.一句多译一句多译_(construction)_(construct)The road is under construction now.The road is being constructed now.HomeworkFinish the pratice items on Book 2 P18.