九年级英语When_was_it_invented课件1.ppt

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1、Unit4Unit4 WhenWhen waswas it it invented?invented?黑旺镇中学黑旺镇中学 殷朋朋殷朋朋学习目标学习目标1.1.学会使用被动语态谈论某种物品发明的时间、学会使用被动语态谈论某种物品发明的时间、发明人及其用途。发明人及其用途。2.2.掌握各种时态的被动语态及情态动词的被动掌握各种时态的被动语态及情态动词的被动语态结构。语态结构。重点单词重点单词：invent,calculator,scoop,operate,invent,calculator,scoop,operate,heat,sour,ancient,remain,notice,produce

2、,heat,sour,ancient,remain,notice,produce,pleasant,pie,throw,taste,century,active,pleasant,pie,throw,taste,century,active,knock,divideknock,divide常考短语常考短语：be used for,light bulb,microwave be used for,light bulb,microwave oven,by mistake,by accident,according to,oven,by mistake,by accident,according t

3、o,fall into,in this way,knock intofall into,in this way,knock into重点句型重点句型：1.When wasinvented1.When wasinvented？2.Who invented the?2.Who invented the?3.Thewas invented by?3.Thewas invented by?4.It is believed that 4.It is believed that语法聚焦语法聚焦：被动语态及其谓语动词的结构形式和用法被动语态及其谓语动词的结构形式和用法。课程标准要求掌握的内容课程标准要求掌握

4、的内容Period1 words and SectionA1a-1cPeriod1 words and SectionA1a-1cPeriod2 SectionA 2a-4Period2 SectionA 2a-4Period3 SectionB 1a-2cPeriod3 SectionB 1a-2cPeriod4 SectionB 3a-4bPeriod4 SectionB 3a-4b Period5 Selfcheck-ReadingPeriod5 Selfcheck-ReadingGroupworkGroupwork (1a)(1a)19761885197118761927学生根据自己搜

5、集的资料练习I thinkwas invented before/after the句型Listening(1b)_ 1876_ 1876_ 1885_ 1885_ 1927_ 1927_ 1971_ 1971_ 1976_ 1976daecb核对信息，学生认真PairworkPairwork (1c)(1c)A A:When was the:When was the telephone/inventedtelephone/invented?B B:I think it was invented in:I think it was invented in 1876/1876/？?Listeni

6、ng(2a,2b)312注意听前准备，尤其是注意听前准备，尤其是2B中的人名。中的人名。Grammar Focus The passive voice The passive voice 被动语态被动语态被动语态被动语态 在被动语态的句子中在被动语态的句子中在被动语态的句子中在被动语态的句子中,谓语部分谓语部分谓语部分谓语部分的结构是的结构是的结构是的结构是be+be+过去分词过去分词过去分词过去分词。被动语态。被动语态。被动语态。被动语态的句子的时态变化反映在的句子的时态变化反映在的句子的时态变化反映在的句子的时态变化反映在bebe动词上。动词上。动词上。动词上。也就是说也就是说也就是说也就

7、是说,把一个句子做成被把一个句子做成被把一个句子做成被把一个句子做成被 动语态的句子动语态的句子动语态的句子动语态的句子,只需要写出只需要写出只需要写出只需要写出bebe动词动词动词动词 的所需时态的所需时态的所需时态的所需时态,再加上所给动词再加上所给动词再加上所给动词再加上所给动词的过去分词就行了。当然的过去分词就行了。当然的过去分词就行了。当然的过去分词就行了。当然,这只是指这只是指这只是指这只是指谓语部分而言。我们知道谓语部分而言。我们知道谓语部分而言。我们知道谓语部分而言。我们知道,be,be动词作动词作动词作动词作为一个独立的谓语动词有自己现在为一个独立的谓语动词有自己现在为一个独

8、立的谓语动词有自己现在为一个独立的谓语动词有自己现在分词分词分词分词(being)(being)和过去分词和过去分词和过去分词和过去分词 (been)(been)。那。那。那。那么么么么,下面我们来看看下面我们来看看下面我们来看看下面我们来看看be be 在各种时态在各种时态在各种时态在各种时态中的变化形式：中的变化形式：中的变化形式：中的变化形式：The passive voice.被动语态被动语态主动语态变被动语态的结构图主动语态变被动语态的结构图:Bell invented the telephone in 1876.The telephone was invented by Bell

9、in 1876.主语谓语动词过去时宾语时间状语主语谓语动词的过去分词宾语时间状语1.1.世界上许多国家都讲英文。世界上许多国家都讲英文。世界上许多国家都讲英文。世界上许多国家都讲英文。Make sentencesMake sentencesEnglish English is spoken is spoken in many countries in many countries all over the world.all over the world.2.2.纸是中国发明的。纸是中国发明的。纸是中国发明的。纸是中国发明的。Paper Paper was invented in China.

10、was invented in China.3.3.这栋大楼是去年建造的。这栋大楼是去年建造的。这栋大楼是去年建造的。这栋大楼是去年建造的。The buildingThe building was built last year.was built last year.Pairwork(3a)Helpful inventions:Helpful inventions:light bulb,TV set,light bulb,TV set,microwave oven,fan,radio,umbrella,microwave oven,fan,radio,umbrella,bicycle,cam

11、era,watch,computer,bicycle,camera,watch,computer,Annoying inventions:Annoying inventions:alarm clock,alarm clock,mobile phone,junk food,ice cream,mobile phone,junk food,ice cream,内容简单，组长带领组员完成。A:What do you think is the most helpful/most annoying invention?B:I think the most helpful invention/most a

12、nnoying is the.A:Why is that?B:.PairworkPairwork (3b)(3b)教师与一名学生示范表演对话，然后让学生分组练习。1.被动语态的结构及其用法。被动语态的结构及其用法。2.invention/inventor/invent3.be used for sth./doing sth.be used as/by4.do you think做插入语做插入语5.most helpful/annoyingcrispy and saltycrispy and saltyDescribe how food tastesDescribe how food taste

13、s.(1a).(1a)potato potato chipschips lemons lemonssour sour ice cream ice cream sweet sweet teateasweetsweet师出示图片，学生用学过的单词描述食物的味道。ListeningListening(2a,(2a,2b)2b)1.1.The potato chips were invented by mistake.The potato chips were invented by mistake.2.They were invented in 1863.2.They were invented i

14、n 1863.3.The customer thought the potatoes werent 3.The customer thought the potatoes werent thin enough.thin enough.4.The customer said they werent salty enough.4.The customer said they werent salty enough.5.George wanted to make the customer happy.5.George wanted to make the customer happy.6.The c

15、ustomer was happy in the end.6.The customer was happy in the end.T TF FT TT TF FF F听一听薯条是怎么被发明的，听录音，判断正误，错的要说明理由。_that potato chips were _that potato chips were invented by mistake?Chips _invented by mistake?Chips _ _by a chef called George Crum._by a chef called George Crum.They were invented in_.G

16、eorge They were invented in_.George Crum cooked them for a long time until Crum cooked them for a long time until they _And he sprinkled lots they _And he sprinkled lots of salt on them so they were_.of salt on them so they were_.2b The2b The history of chips history of chipsDid you knowDid you know

17、 were were inventedinvented18531853were were crispycrispyreally really saltysalty稍有难度，录音调控，听力技巧。Reading(3a)Who invented tea?Who invented tea?Who invented tea?Who invented tea?1.What is this article about?1.What is this article about?2.When was it invented?2.When was it invented?3.Who was it invented

18、 by?3.Who was it invented by?4.How was it invented?4.How was it invented?小组合作解决问题，自学知识点，教师指导，学生展示。Writing Writing(3b)(3b)From pie plate to flying diskFrom pie plate to flying diskSelf Check Self Check (2)(2)The abacus was invented in the sixth The abacus was invented in the sixth century by Chinese.

19、century by Chinese.in the sixth century by the Chinese注意：ReadingDo you know when basketball was invented?3a3aparks schoolsexercise100 years old first game played in 1891played indoors on wooden floor foreign players in NBAcourt basket aim to score“baskets”backboard3b3b1.Who invented basketball?2.2.W

20、hy were the Berlin Olympics important for basketball?3.3.What is the aim of basketball?4.4.Name a professional basketball organization in America.James Naismith.It was the first time basketball was played as an Olympic event.To get the ball into the basket.The National Basketball Association.1.by mi

21、stake错误地错误地 2.in the end/finally/at last3.on接触接触/above上方上方/over垂直垂直4.by accident偶然地偶然地5.according to 根据根据 6.notice的用法的用法7.in this way这样这样 8.fromto9.taste用作系动词用作系动词10.preferto/prefer doing todoing/prefer to dorather than do11.in the sixth century 在在6世纪世纪12.It is believed that/It is said that/It is supposed that13.The number of/a number of14.Although,but