人教新课标必修2 Unit3 Comuters Using Language1 课件 (29张PPT)

课件29张PPT。 Unit 3 Computers Period 4 Grammar1.His house _____(paint) next week. 2. After that the Olympics_____ (hold) in our country. 3.This work _____(do) at once. 4. He _____(send) there by us tomorrow. 5. The carrots _____(eat) by the rabbits.请用括号内单词的正确形式填空。 一般将来时的 被动语态 will be paintedwill be heldwill be donewill be sentwill be eatenReview the grammar we have learned last unit.be donehad donehave/has done Read the following sentences , what characteristics（特征）do they have in common?1. Till now, three films have been shown in that small village this month. 2. Two cars have been repaired for three hours. 3. Tom’s novel has been published. 4. The plan has been studied by the experts for four times. 5. The house has been cleaned. Lead-in 1. Till now, have been shown in that small village this month. 2. have been repaired for three hours. 3. Tom’s has been published. 4. The has been studied by the experts for four times. 5. The has been cleaned.three filmsTwo carsnovel plan house 2.说话时已经完成的动作或出现的结果。 1.主语是行为动作的承受者。3.动作或状态始于过去，持续到现在，并可能持续下去。Present Perfect Passive Voice 现在完成时的被动语态定义： 强调过去的动作对现在造成的影响或结果，但主语为动作的承受者， 表示“……已经被……”。Structure 1.构成： 现在完成时 被动语态 have/has done + be done 现在完成时的被动语态结构： have/has been done …..已经被……have/has 和been 这两个助动词 缺一不可1.“I MISS YOU” ____ _____ (write) on the notebook. has been written2.The apple _____ (eat) by Sunny. has been eatenⅠ. Fill in the blanks using present perfect passive voice.Exercises3. Many flowers_____ (put on)the bike.have been put on4. The camera_____(use) to take photos.has been used5. Lots of beautiful flowers and trees _____(plant) have been planted. Ⅱ. Make up sentences using present perfect passive voice.Group 1 the buildings, destroy, earthquake The buildings have been destroyed in the earthquake.Group 2 machine replacecomputerThe machine has been replaced by the computer .Group 3 new bridge, build , in our city A new bridge has been built in our city Group 4 Apple Watch, inventApple Watch has been invented recently.Group 5, robot, developThe robot has already been developed.Ⅲ.Change the sentences into the present perfect passive voice1.Workers have built the house since two years ago.The househas been builtby workers since two years ago.2. We have received many letters since last week.Many letters have been received by us since last week.2. 现在完成时被动语态的各种句式：have/has＋been＋donehave/has＋not + been＋done Have/Has＋主语＋been＋done……? 疑问词+have/has+主语+been + done…?请判断下列句子属于哪种句式。 1. Tom’s novel has not been published. 2. The experiment has been done successfully. 3. Who has been invited? 4. Has his bike been repaired?3.使用现在完成时的被动语态要注意以下几点:1) have/has和been，两个助动词缺一不可。2) 只有及物动词才有被动语态,不及物动词（词组）没有被动语态。如: happen, take place, die, ap ... ...