Unit 3 The Internet-Discovering Useful Structures（ppt课件）-2022新人教版（2019）《高中英语》必修第二册.pptx

1、Discovering Useful StructureThe Present Perfect Passive VoiceUnit 3 The Internet使用现在完成时的被动语态要注意的问题使用现在完成时的被动语态要注意的问题1.现在完成时的被动语态、现在进行时的被动语态及一般过去现在完成时的被动语态、现在进行时的被动语态及一般过去时的被动语态的区别时的被动语态的区别The machine has been repaired.（说明动作发生在过去，对现在有影响，（说明动作发生在过去，对现在有影响，“现在修好了现在修好了”）The machine is being repaired now

2、.（说明动作正在进行）（说明动作正在进行）The machine was repaired yesterday.（只说明动作发生在过去）（只说明动作发生在过去）2.非延续性动词，如非延续性动词，如borrow，finish，begin，start，buy，marry，open，join等构成的现在完成时的被动语态不能与表等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，则要改换动示一段时间的状语连用。若要表达相应的意思，则要改换动词或时态，例如：词或时态，例如：工程已开始三个月了。工程已开始三个月了。The project has been started for

3、three months.（F）The project has been on for three months.（T）1.用现在完成时的被动语态改写句子用现在完成时的被动语态改写句子Jacks boss has always praised him for his devotion to work.Jack _ by his boss for his devotion to work.They have found a good place to build a temple in the village.A good place to build a temple in the _ vil

4、lage.We havent yet decided how to solve that difficulttechnological problem.How to solve that difficult technological problem _ yet.1.现在完成时的被动语态强调一个发生在过去的被动性的动现在完成时的被动语态强调一个发生在过去的被动性的动作，动作已完成并强调对现在造成的影响或结果，主语和谓作，动作已完成并强调对现在造成的影响或结果，主语和谓语之间为被动关系。语之间为被动关系。The door has already been locked.门早已经被锁上了。门早已经

5、被锁上了。I have been employed at the job since 2015.自从自从2015年，我就做这份工作。年，我就做这份工作。肯定式肯定式主语主语have/has been done.否定式否定式主语主语have/has not been done.一般疑问式一般疑问式Have/Has主语主语been done.？特殊疑问式特殊疑问式特殊疑问词特殊疑问词have/has主语主语been one.？3.现在完成时的主动语态变被动语态现在完成时的主动语态变被动语态（1）只带有一个宾语的动词变为被动语态时，将主动语态的）只带有一个宾语的动词变为被动语态时，将主动语态的宾语变

6、为被动语态的主语。宾语变为被动语态的主语。Tom has sold out all the magazines.All the magazines have been sold out by Tom.（2）带有双宾语的动词，如）带有双宾语的动词，如give，send，bring，take，teach，show，tell，make，sing，write，read，sell，buy，pay，lend，pass，promise等，变为被动语态时，一般将间接宾语等，变为被动语态时，一般将间接宾语变为被动语态的主语，若将直接宾语变为被动语态的主语时，变为被动语态的主语，若将直接宾语变为被动语态的主语时，

7、间接宾语前面要用相应的介词。间接宾语前面要用相应的介词。We have given him the book.He has been given the book.The book has been given to him.（3）带有复合宾语的动词变为被动语态时，只能将宾语变为）带有复合宾语的动词变为被动语态时，只能将宾语变为主语，原来的宾语补足语变为主语补足语。主语，原来的宾语补足语变为主语补足语。After decorating the Amber Room with jewels，the artists have made it more splendid.After being de

8、corated with jewels，the Amber Room has been made more splendid.单句语法填空单句语法填空1.They _（sell）ten apartments in the past one hour.2.He _（buy）a present when she visited Xinjiang.3.He _ already _（ask）to help you.4.The company _（make）its workers workhard recently.5.A notice _ already _(put up)on the wall.6.Since we realized that we should study hard,our time _(make)full use of.7.These streets _(not sweep)for two days.8.How long _ the book _(keep)?Thank You