Unit 3 The Internet Discovering Useful Structures （ppt课件）-2023新人教版（2019）《高中英语》必修第二册.pptx

1、高中英语 必修第二册 UNIT 3 THE INTERNET UNIT 3 THE INTERNET Discovering Useful StructuresReview现在完成时：have/has done被动语态：be done现在完成时的被动语态：Have/has been done1.Janes life has been greatly improved by the Internet.2.Many people have been helped by the club.3.His novel has not been finished.Have the new booking s

2、ystem for tickets been used?4.How long has the battery been used?肯定式Have/has been done否定式一般疑问句式特殊疑问句式Observe the sentences and fill in the table.Have/has not been done特殊疑问词have/has 主语been donehave/has 主语been donePractice makes perfect.1.你的车已经修好了。2.地面还没打扫干净。3.那些房间粉刷了吗？4.这部电影已经放映多久了？1.Your car has bee

3、n repaired.2.The floor hasnt been cleaned.3.Have those rooms been painted?4.How long has the film been on?l The club has been founded for five years.l My report has been handed in for a week.Correct the mistakes.The club was founded five years ago.My report was handed in a week ago.注：非延续性动词不能和for或si

4、nce引导的表示一段时间的状语连用u since;so far;up to now;by now,ever since,for+一段时间；in the past/last+一段时间；over the past 一段时间 recently；latelyu never；ever；beforeu just；already；yet；u twice；several times；it is the first/second time that.主动：have/has done被动：have/has been done标志词1.Much useful information about these plan

5、ets _(collect)since 1971.2.The new dictionaries are very useful.They sell well and _(sell)out already.3.In my hometown,there is always a harvest supper for the farmers after all the wheat _(cut)4.Im writing to inform you that a Tai Chi Club _(found)in our school recently.5.In recent years,our living

6、 environment _(pollute)worse and worse.6.T h e 1，8 0 0 y e a r s o l d Y e l l o w C r a n e T o w e r _(rebuild)many times in history.7.Recently a survey _(do)to find out the average number of books each person reads every year in China.Practicehas been collectedhave been soldhas been cuthas been f

7、oundedhas been pollutedhas been rebuilthas been done8Over the past four years,more than$10 million _ (spend)carrying out the project.9Its the first time that the old computer _(check)since I bought it.10For centuries,the ancient language _(pass)on from one generation to another.11Some efforts _(make

8、)to improve the air quality in the city last winter.12Computer science,in which rapid progress _(make)in recent years,plays a very important part in our daily lives.has been spenthas been checkedhas been passedhave been madehas been made1.（已经证实）that it was the drivers carelessness that resulted in t

9、he terrible accident.2.In recent years，stress _(regard)as a cause of a whole range of medical problems.3.It is the first time that music therapy_(introduce)into treating depression.4.Never in my life _I ever been touched by such a song.5.All the preparations for the task _(complete),and we re ready to start.6.Numerous measures _(take)to cope with these problems by the government up to now.It has been confirmed that has been regardedhas been introducedhave been completedhavehave been taken