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高中必修第二册《Unit 3 The internet》名师优质课PPT课件下载
Discovering Useful Structure
The Present Perfect Passive Voice
Unit 3 The Internet
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，“现在修好了”）
The machine is being repaired now.（说明动作正在进行）
The machine was repaired yesterday.（只说明动作发生在过去）
2.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：
工程已开始三个月了。
The project has been started for 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
①Jack's boss has always praised him for his devotion to work.
Jack ___________________________ by his boss for his devotion to work.
②They have found a good place to build a temple in the village.
A good place to build a temple in the ___________________ village.
③We haven't yet decided how to solve that difficult
technological problem.
How to solve that difficult technological problem ___________________ yet.