Unit 3 Tomorrow’s world Grammar and usage(1) 被动语态课件（35张）

课件35张PPT。Unit 3 Tomorrow’s world Grammar and usage The passive voiceThe man _____ (call) “A good husband”.is calledFill in the blanks according to the pictures.A frog _____ (catch) by a big bird just now.was caughtThe?car?_____ (repair)? for?two?hours. has?been?repaired The pet dog _____ (treat) by a vet. is being treatedA new building _____ (build) here soon.will be built?How can the active voice be changed into the passive voice? Let’s enjoy a short flash on how to change the active voice into the passive voice.Point out the verb, the subject and the object in the following sentences:指出句中的主谓宾语。We kept food in the fridge.We must close the windows and the door.S V.O.SV.O. Food was kept (by us) in the fridge.The windows and the door must be closed.The Passive voice1.The active and passive voices can be interchanged without much difference in meaning.(句子的主动语态和被动语态可互换，在意义上区别很小。)In the active voice we use the doer of an action as the subject of the sentence.(在主动语态中，句子的主语是动作发出者)；In the passive voice we use the person or the thing that is affected by the action as the subject of the sentence.在被动语态中，句子的主语是动作的接受者或受影响者。In what situations is the passive voice used? 使用被动语态的情况：Many houses will be built here.The song The East is Red was written by a poor peasant.a. 不知道或没必要指出动作的执行者。b. 强调动作的承受者。The plan was supported by those who wished to have more chances to speak English. You are requested to attend the meeting.c. 动作的执行者有较长的修饰语。d. 出于礼貌，不愿意说出动作执行者。 被动语态由助动词be+过去分词构成，时态通过be表现出来。Let’s enjoy a short flash on different tenses of the passive voice.The passive voicebe+ done am/is/are 一般现在时 am/is/are + being 现在进行时shall/will + be 一般将来时have/has + been 现在完成时被动语态的构成 be+ done was/were 一般过去时 was/were+being 过去进行时would+be 过去将来时had+been 过去完成时Fill in the blanks with the right form of the words given:I _____ (give) a new book by my father on my birthday. English _____ (find) very useful. 3. The work _____ (finish) tomorrow. 4. The flowers _____ (water) by them now.was given is foundwill be finished are being watered5. The railway _____ (build) this time last year. 6. The new railway ____ already _____ (build). 7. The new railway _____ (build) by the end of last year. 8. He told me the sports meeting _____ (hold) the next month. 9. Rice _____ (grow) in the south of the States.was being builthas been builthad been builtwould be held is grown3.在用被动语态时还要注意一下几点： a. We usually use by to introduce the doer of the action, but we usually don’t mention the doer when it is not necessary or not important, or when it difficult to say who the doer is.(在被动语态中，动作发出者往往置于by之后，但在不必指出动作发出者是谁、动作发出者并不重要或很难指出动作发出者是谁时，一般不提及动作发出者。) e.g. Both the headsets and the gloves are connected to a computer ne ... ...