Unit 3 Section ⅢDiscovering Useful Structures （新教材）人教版（2019）必修第二册课件.ppt

1、Section Discovering Useful Structures现在完成现在完成 时的被动语态时的被动语态 主干图解主干图解 探究发现探究发现 1Over time I have been changed quite a lot. 2Since the 1970s many new applications have been found for me. 3The important problem has been discussed for nearly two weeks. 4The ink has not been removed from the clothes. 5Hav

2、ent your problem been solved? 6How many buildings have been built in your school? 我的发现我的发现 (1)以上例句中都使用了以上例句中都使用了 。 (2)以上例句中第以上例句中第1、2、3句是该时态的句是该时态的 句式；第句式；第4句是句是_ _句式；第句式；第5句是句是 句式；第句式；第6句是句是 句式。句式。 现在完成时的被动语态现在完成时的被动语态 肯定肯定 否否 定定 一般疑问一般疑问 特殊疑问特殊疑问 新知突破新知突破 1Have you confirmed the Wi- Fi password? 你

3、确认过你确认过Wi- Fi密码了吗？密码了吗？ confirm vt. 确认；使确信；证实；证明；批准确认；使确信；证实；证明；批准 confirmsth./that从从句句/wh- 从句从句 (尤指通过提供更多尤指通过提供更多 证据证据)证实证实 It has been confirmed that . 已证实已证实 confirm sb.in (belief/opinion/view) 使某人确信使某人确信(信念信念/意见意见/ 观点观点) The expression on her face confirmed her sadness. 她脸上的表情证明她很难过。她脸上的表情证明她很难过

4、。 The latest evidence confirmed me his honesty. 最新的证据让我坚信他是诚实的。最新的证据让我坚信他是诚实的。 The rumours of an attack (confirm) later. 发动攻击的谣言后来被证实。发动攻击的谣言后来被证实。 There was frost on the ground, (confirm) that fall had arrived in Canada. 地面上有霜，证明秋天已到达加拿大了。地面上有霜，证明秋天已到达加拿大了。 it is the most effective treatment. 已证实这是

5、最有效的治疗方法。已证实这是最有效的治疗方法。 in were confirmed confirming It has been confirmed that 2Have you pressed the button yet to copy the file? 你按了按钮拷贝文件了吗？你按了按钮拷贝文件了吗？ press vt.按；压；敦促按；压；敦促 n按；压；印刷；新闻；新闻界按；压；印刷；新闻；新闻界 (常与定冠词常与定冠词the连用连用) (1)写出下列句中写出下列句中press的词性及含义的词性及含义 The doctor gently pressed his stomach. _

6、They are pressing us to make a quick decision. _ Members of the press were not allowed into the meeting. _ vt.按按 vt.敦促敦促 n.新闻新闻界界 (2)单句语法填空单句语法填空 We feel quite unfit because the bank _ (press) us for repayment of the loan. 我们感觉十分不舒服，因为银行敦促我们偿还贷款。我们感觉十分不舒服，因为银行敦促我们偿还贷款。 When exposed to danger and con

7、flict, men tend to increase blood _ (press), feeling nervous or anxious. 当暴露于危险和冲突中时，人们往往会血压上升，感觉紧当暴露于危险和冲突中时，人们往往会血压上升，感觉紧 张或忧虑。张或忧虑。 is pressing pressure 一、结构一、结构 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

8、主语been done .？ (2019 江苏高考江苏高考)Wildlife has been greatly threatened in the modern age. 野生动物在现代受到了极大的威胁。野生动物在现代受到了极大的威胁。 The construction of the bridge has not been finished. 这座桥的建设还没有完这座桥的建设还没有完成。成。 Has the date for the next meeting been decided? 下次会议的日期已决定了吗？下次会议的日期已决定了吗？ How long has the battery no

9、t been changed? 电池多久没有更换了？电池多久没有更换了？ 即时训练即时训练11 (1)变换句子变换句子 The children have already been told the good news. 将原句变为否定句。将原句变为否定句。 将原句变为一般疑问句。将原句变为一般疑问句。 _ 对原句中的对原句中的the children进行提问。进行提问。 _ The children havent been told the good news yet. Have the children been told the good news yet? Who has been t

10、old the good news yet? (2)补全句子补全句子 Im sorry, but the letters yet. 很抱歉，但是这些信件还没有被打印出来。很抱歉，但是这些信件还没有被打印出来。 The plan for nearly two hours. 这项计划已被讨论了近两个小时了。这项计划已被讨论了近两个小时了。 She since then. 从那时候起，她就没被提起。从那时候起，她就没被提起。 havent been typed has been discussed hasnt been mentioned 二、用法二、用法 1现在完成时的被动语态同它的主动语态一样，

11、强调过去的现在完成时的被动语态同它的主动语态一样，强调过去的 动作对现在造成的影响或结果，通常与动作对现在造成的影响或结果，通常与already, yet, just, never, recently等副词连用。等副词连用。 The machine has already been repaired. 机器已经修好了。机器已经修好了。 2表示一个被动的动作或状态开始于过去，持续到现在，并表示一个被动的动作或状态开始于过去，持续到现在，并 可能持续下去，常与可能持续下去，常与for或或since引导的时间状引导的时间状语连用，或语连用，或 用于用于“How long .？”句型中。句型中。 Fi

12、nancial problems of the company have been discussed for nearly two hours. 公司的财务问题已被讨论了近两个小时了。公司的财务问题已被讨论了近两个小时了。 How long has this film been shown? 这部电影已放映多长时间了？这部电影已放映多长时间了？ 3用在时间或条件状语从句中，表示将来某时已完成的动用在时间或条件状语从句中，表示将来某时已完成的动 作，即用现在完成时的被动语态代替将来完成时的被动语作，即用现在完成时的被动语态代替将来完成时的被动语 态。态。 You shouldnt leave

13、school before your homework has been finished. 在你的作业没完成之前你不应该离开学校。在你的作业没完成之前你不应该离开学校。 联想发散联想发散 常与现在完成时连用的时间状语：常与现在完成时连用的时间状语： already 已经已经 yet 已经已经 recently/lately 最近最近 since then 从那时起从那时起 ever since 自那以来自那以来 ever 曾经曾经 so far 迄今为止迄今为止 for a long time 很长一段时间很长一段时间 by now 到现在为止到现在为止 in recent years 在最

14、近几年里在最近几年里 in/during/over the past/last years 在过去的几年里在过去的几年里 即时训练即时训练2 (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 t

15、emple in the village. We havent decided how to solve that difficult technological problem yet. How to solve that difficult technological problem _ _ yet. has always been praised has been found hasnt been decided (2)补全句子补全句子 I will go home when my homework _. 当我的家庭作业完成时我就回家。当我的家庭作业完成时我就回家。 Paper mone

16、y _. 纸币已被使用了纸币已被使用了1 000多年了。多年了。 has been finished has been used for over one thousand years 三、注意事项三、注意事项 1只带有一个宾语的动词变为被动语态时，将主动语态的宾只带有一个宾语的动词变为被动语态时，将主动语态的宾 语变为被动语态的主语。语变为被动语态的主语。 His boss has already punished him. He has already been punished (by his boss) 即时训练即时训练3 将下面句子变为被动语态将下面句子变为被动语态 I have a

17、sked her to help you. _ We have planted many trees on the hill in the last 5 years. _ _ She has been asked to help you. Many trees have been planted on the hill in the last 5 years. 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,

18、promise等，变为被动语态时，一般将间接宾语变为被动等，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，间接语态的主语，若将直接宾语变为被动语态的主语时，间接 宾语前面要用相应的介词。宾语前面要用相应的介词。 The company has given him a chance to work abroad recently. He has been given a chance to work abroad recently (by the company) A chance to work abroad has been given to him

19、recently (by the company) 即时训练即时训练4 将下面句子变为被动语态将下面句子变为被动语态 He has sent me an e- mail. _ I have been sent an e- mail. An e- mail has been sent to me. 品悟品悟语境中的语法语境中的语法 Li Ming：Hi, Lin Tao. How nice to see you on the first day of the new term! Lin Tao：Yes. Nice to see you again. Li Ming：I know that you

20、r parents have been working in that city for about a year. Can you tell me something there after the earthquake? Lin Tao：Of course. Since the earthquake happened, many soldiers have been sent there, and many kinds of supplies (物物 资资) have been carried there from all over the country. Now, most peopl

21、e there live/are living a happy life again. Li Ming：How about the schools there? Lin Tao：Several new schools have been set up and also some schools which were damaged in the earthquake have been rebuilt. So all the students can go back to school to study now. Li Ming：Thats wonderful. Im sure their life will be better and better. When will your parents come back? Lin Tao：They will be back next month. 注：注：加黑加黑部分为现在完成时的被动语态。部分为现在完成时的被动语态。 “课时跟踪课时跟踪检测检测”见见“Unit 3 课时跟踪课时跟踪检测（三）检测（三）” ( (单击进入电子文档单击进入电子文档) ) 谢 谢 观 看