高中英语Learning about language the Present Perfect PassiveVoice部优课件

1、B2U3 Learning about languageThe Present Perfect Passive Voice现在完成时的被动语态The development of the computer calculating machineanalytical machine personal computer / desktoplaptopuniversal machinehuge computer As is known to all, the computer is one of the most important inventions in the 20th century. O

2、ver time the computer 1 (change) quite a lot. It began as a calculating machine in 1642. Nearly about 200 years later, the machine was built as an analytical machine that could “think” logically. Later, a “universal machine” was built to solve mathematical problems. Fill in the blanks according to t

3、he text :has been changed With time going by, the computer 2 (make) smaller, quicker and cleverer. First as a PC (personal computer) and then as a laptop. It 3 (use) in offices and homes from then on. In the early 1960s, computers were connected by a network. The information could be shared with oth

4、ers through the World Wide Web. has been made has been used Since the 1970s, many new applications 4 (find) for the computer, and its goal is to provide humans with the life of high quality. Since its birth, the computer 5 (design) to serve the human race. have been found has been designed1. Over ti

5、me the computer has been changed quite a lot.2. With time going by, the computer has been made smaller, quicker and cleverer.3. It has been used in offices and homes from then on.4. Since the 1970s many new applications have been found.5. Since its birth, the computer has been designed to serve the

6、human race.Read and think: What is the same? have / has + been + Vpp.1. Over time I have been changed quite a lot.Find out the same structures in the text on P18.(Line 21)(Line 28)(Line 30)(Line 1)( Line 26)(Line 17)Over time2. I have been used in offices and homes since the 1970s. Over time my memo

7、ry has developed so much that I never forget anything I have been told. 4. Since the 1970s many new applications have been found for me. 5. I have also been put into robots and used to make mobile phones .6. I have even been put into space rockets and sent to explore the moon and Mars. Since the 197

8、0s Over timeSince the 1970sDiscussionWhen should we use the present perfect tense?since the 1970sover time Pay more attention to the following time phrases:Conclusion : 时间点 （eg. . since the 1970s)1. since + S从 +V过 （eg. since I came here) the past / last few weeks / years 3. in recent years2. over ti

9、me / with time going by4. for + 一段时间 by now / up to now / so far 5. recently / lately / already / yet have / has + been + Vpp. Conclusion :be + V.pphave/has + V.pp V. pp bebeen(not)现在完成时被动语态基本结构现在完成时的被动语态 have/has + Vpp have / has (not) + been +Vpp. Practice:eg. Computers have changed our life. has

10、been changedOur life(by computers). 1. They have finished the construction of the new bridge by now. The construction of the new bridge _ (by them) by now. 2. We have built a new library in our school this year. A new library _ in our school this year. has been finishedhas been builtTask 1: 3. My mo

11、ther has taught me to be honest since I was very young. I _ (by my mother) to be honest since I was young. 4. Car accidents have killed ten persons on this road in the past few months. _ _ (by car accidents) on this road in the past few months.Ten personshave been killedhave been taught 5. We have u

12、sed the TCM (Traditional Chinese medicine) to treat cancers for a long time. _ _ (use) to treat cancers for a long time. 6. They have not finished the construction of the new railway lines by now. _ _ (not finish) by now.has been usedhas not been finishedThe TCMThe construction of the new railway li

13、nes Task 2:Since 1958, they _ (recognized) as the national theatre of Israel(以色列）. (2017 全国卷2)Already this year, 115 measles (荨麻疹) cases _ (report) in the USA. (2017 北京高考)Despite the previous rounds of talks, no agreement _ (reach) so far by the two sides. (2015 天津)Use a fire extinguisher (灭火器) only

14、 if you _ (train) to do so.(2018 天津卷 )The problems of excessive (过度的) energy consumption, climate change and population growth _ (describe) in a book by Thomas L. (2018 浙江卷)have been recognizedhave been reportedhas been reachedhave been trainedhave been describedSince 1958AlreadySo far Discussion: W

15、hat has been changed in our school in the past few years?A large playground_Our teaching-building _ A new library _A new smart dining hall _Several multifunction classrooms _ buildrebuilddecorateconstructPut into useHomework 假如你是李华，你的英国朋友Jim对中国的“新四大发明”(共享单车、高铁、网购和在线支付/支付宝)很感兴趣，特写信向你询问。请你给他回信,选一项新发明进行介绍。注意：1.词数不少于100； 2.开头和结尾已给出,不计入总词数。 3.参考词汇： shared bikes, high-speed rail(way), online shopping, E-payment/online-payment / Alipay.Dear