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1、Unit 9 When was it Unit 9 When was it invented?invented?Section A-1Section A-1宋海燕宋海燕Class 3 Grade 3,No.13 Middle SchoolClass 3 Grade 3,No.13 Middle School Go for it!Go for it!Grade 9 Grade 9Four great inventions of Chinagun powderpaper makingprintingcompasspaper makingpaper Cai Lun invented the pape
2、r making in 105.invented the paper making in 105.Cai Lun The paper makingwasby inventioninvent inventor Task 1:Guess:Which one was invented earlier Task 1:Guess:Which one was invented earlier and which one was invented later.which one was invented later.A:I think the was invented before the B:Well,I
3、 think the was invented after the calculatorTask 2:Listen and find out the dates of the inventions.Task 2:Listen and find out the dates of the inventions.The was invented in 18851876197119761927acbedDo you remember?Do you remember?A:When was the invented?A:When was the invented?B:It was invented in
4、B:It was invented in paper makingpaper-Who was the paper making invented by(in 105)?-It was invented by Cai Lun.The paper making was invented by Cai Lun in 105.Task 3:Lets guess who invented it.Task 3:Lets guess who invented it.A:Who was the invented by?B:I think it was invented by car computertelep
5、honelight bulbSteve Jobs and Steve WozniakEdisonKarl BenzBellTask 4:Do you know what they Task 4:Do you know what they are used for?used for?Lets match them to the uses!Lets match them to the uses!1.talking with the person who isnt near2.traveling3.cooking4.eating food5.keeping away from the rain6.w
6、aking us upThe is/are used for ing.-What is/are the used for?-It is/They are used for ing.Task 5:Work in pairsTask 5:Work in pairs to talk aboutto talk about the uses of the things the uses of the things around us.You can talk about the things below if you want.around us.You can talk about the thing
7、s below if you want.Task 6:Lets know more inventions.Task 6:Lets know more inventions.A:When was/were the invented?B:It was/They were invented in A:Who was/were the invented by?B:It was/They were invented by A:What is/are the used for?B:It is/They are used for ing.Task 7:Task 7:4 students a group to
8、 report:4 students a group to report:introduce an invention introduce an invention including its inventor/date and uses.including its inventor/date and uses.SUMMARY:.被动语态的构成被动语态的构成:1.be+过去分词过去分词+by+(动作执行者动作执行者).2.被动语态句子的时态由被动语态句子的时态由be的时态的时态决定决定,be后的过去分词不随之改变后的过去分词不随之改变.3.否定句否定句:在在be后加后加not.4.疑问句疑问句
9、:把把be提前提前.SUMMARY:.主动语态变被动语态:1.主动语态的宾语主动语态的宾语 被动语态的主语被动语态的主语.2.主动语态的动词主动语态的动词 be+该动词的过去分词该动词的过去分词 (作被动语态的谓语作被动语态的谓语).be按人称变化按人称变化,但时态不变但时态不变.3.主动语态的主语主动语态的主语 by+该主语该主语(放在被动放在被动语态的句尾语态的句尾,可以省略可以省略).若原主语是代词放在若原主语是代词放在be后要变为其宾格形式后要变为其宾格形式.被动语态专项练习被动语态专项练习.据划线部分提问据划线部分提问1.Glasses were invented in1450.2.
10、The bottle machine was invented by Michael Owens.3.Dictionaries are used for looking up words.When were glasses invented?Who was the bottle machine invented by?What are dictionaries used for?.用所给词的适当形式填空用所给词的适当形式填空:1._ a new library _ in our school last year?(build)2.They _ to school.(take)3.-When _
11、 these computers _in this school?-Last year.(use)4.The Great Wall _ all over the world.5.I _ in summer.(bear)(know)6.Who _ this book _ by?(write)7.Older people _ well.(must,look after)Was builtwere takenwere usedwas knownwas bornwas writtenmust be looked after .将下列句子变为被动语态，每空一词。将下列句子变为被动语态，每空一词。1.We
12、 can finish the work in two days.The work _ _ _ in two days.2.The children will sing an English song.An English song _ _ _ by the children.3.They use knives for cutting things.Knives _ _ for cutting things.4.Lucy sent me a New Year Card last week.A New Year Card _ _ _ her by me last week.5.We clean
13、the classroom every day.The classroom _ _ every day.can be finishedwill be sungare usedwas sent towas cleanedHomework:Homework:根据你所掌握根据你所掌握的材料写一个的材料写一个短文短文.介绍一介绍一个你认为最有个你认为最有用用/最有趣最有趣/最最的发明的发明.1.1.题目题目The inventionThe invention 2.2.适当使用被动适当使用被动语态语态3.60803.6080词词Lets remember foreverLets remember forever:Genius is one per cent inspiration and ninety-Genius is one per cent inspiration and ninety-nine per cent perspiration.nine per cent perspiration.(天才天才=1%=1%灵感灵感+99%+99%汗水汗水)-Thomas Edison -Thomas Edison