Unit 2 Using language Grammar 现在完成时被动语态课件-2022-2023学年高中英语外研版（2019）选择性必修第二册

Book2 unit3 Grammer Present perfect passive voice observing 1 look at the following sentence,paying attention to the underlined part: 主动：l.He has repaired the machine for two hours. (他修理这台机器已有两小时了) 彼动：The machine has been repaired for two hours.. (这台机器己修了两小时了) 主动：2.The teacher has borrowed the books. (老师把那些书借走了) t被动：The books have been borrowed by the teacher (那些书被老师借走了) 现在完成时的被动语态的构成： This morning our physics teacher did a lightning experiment.The experiment has been done successfully. However,the conclusion of the experiment has not been accepted by most of us."Has the experiment been done improperly?What has been done by Franklin in the past?"He asked himself. 现在完成时被动语态的构成： 肯定式为：have/has+been+done 否定式为：have/has+not+been+done 一般疑问：have/has+been+done 特殊疑问：疑问词+have/has+been+done 现在完成时的被动语态用法： 1.过影响现（过去已经发生的动作对现在造 成的影响) I have been beaten by my father twice. 2.过持到现（过去已经发生的动作一直持续 到现在。) 3.主语为动作的承受者（即主语被...) 现在完成时 present perfect tense) past present(now) future do my homework 常与现在完成时连用的时间标志: already(已经),yet(已经),just(刚刚),ever( ) 曾经),lately,recently,sincethen, up to now,so far,ever since, by now, in/ during/ 0 Ver the past/ last years…… 划出下列句中时间标志词： I have already posted the letter He hasn't done his homework yet. Have you ever been to Beijing I've worked in the school since 1999 He's lived in Shenzhen for 6 years. I have already posted the letter. He hasn't done his homework yet Have you ever been to Beijing I've worked in the school since 1999. He's lived in Shenzhen for 6 years. 现在完成时的被动语态注意事项： 1.现在完成时的被动语态有两个助动词，即have/ has和been,两者缺一不可。 2.并不是所有动词都有被动语态，不及物动词或短语 没有。 3短语动词不可分割也不可省略短语的介词或副词。 例如：The orphan has been well looked after.这位孤儿 一直受到很好的照顾。 10