Unit+6+Section+A(2d+4a-4c)语法课件 人教版九年级英语全册.pptx
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1、 Section A 2d+Grammar1.The personal computer was invented in 1976.(提问提问)_ _ the personal computer _?2.The shoes with lights were invented by Julie Thompson.(提问提问)_ _ _ the shoes with lights _?3.Knives are used for cutting things._ _ knives _ _?4.A Chinese named Cai Lun invented paper.(改被动语态改被动语态)Pap
2、er _ _ _ a Chinese named Cai Lun.What are used for was invented byWhen was inventedBy whom were inventedDo you know who the zipper was invented by?Lead inWhats this?zipper n.拉链;拉锁拉链;拉锁Where can you find it?trousersbagsshoessuitcasebackpackRead 2d and answer the questions.1.Whats the subject for the
3、school project?2.Who invented the zipper?3.When was the zipper invented?4.When was it used widely?Small inventions that changed the world.(It was invented by)Whitcomb Judson.(It was invented)in 1893.Around 1917.改变世界的小发明改变世界的小发明Why the zipper was invented in 1893,but it was popular around 1917?1.Mayb
4、e it was of bad quality.2.Maybe it was not convenient.3.Maybe it was so expensive.4.Maybe it was.1893年,一个叫年,一个叫“贾德森贾德森”的美国工程师,研制了一个的美国工程师,研制了一个“滑滑动氏没紧装置动氏没紧装置”,并获得了专利,这是拉链最初的雏形。但这,并获得了专利,这是拉链最初的雏形。但这一发明并没有很快流行起来,主要原因是这种早期的一发明并没有很快流行起来,主要原因是这种早期的锁紧装锁紧装置质量不过关置质量不过关,容易在不恰当的时间和地点松开,容易在不恰当的时间和地点松开,使人难堪。使
5、人难堪。1913年,瑞典人年,瑞典人“桑巴克桑巴克”改进了这种粗糙的锁紧装置,使改进了这种粗糙的锁紧装置,使其变成了一种可靠的商品。他采用的办法是把金属锁齿附在其变成了一种可靠的商品。他采用的办法是把金属锁齿附在一个灵活的轴上。这种拉链很牢固,只有滑动器滑动使齿张一个灵活的轴上。这种拉链很牢固,只有滑动器滑动使齿张开时才能拉开。开时才能拉开。拉链最先用于拉链最先用于军装军装。第一次世界大战中,美国军队首次订购。第一次世界大战中,美国军队首次订购了大批的拉链给士兵做服装。但拉链在民间的推广则比较晚,了大批的拉链给士兵做服装。但拉链在民间的推广则比较晚,直到直到1930年才被妇女们接受,用来代替年
6、才被妇女们接受,用来代替服装服装的钮扣。的钮扣。拉链是在拉链是在1926年获得现在的名称的。据报道,一位叫年获得现在的名称的。据报道,一位叫“弗朗弗朗科科”的小说家,在推广一种拉链样品的一次工商界的午餐会上说:的小说家,在推广一种拉链样品的一次工商界的午餐会上说:“一拉,它就开了!再一拉,它就关了!一拉,它就开了!再一拉,它就关了!”十分简明地说明了拉十分简明地说明了拉链的特点。链的特点。“拉链拉链”这个词是这样来的这个词是这样来的。2d.Think and summarize.How to write an inventionWhat is the invention?Who was it
7、invented by?When was it invented?What is it used for?1.1.学校课题的主题学校课题的主题2.2.帮助我想出一个发明帮助我想出一个发明3.3.我乐意我乐意 4.4.一项如此伟大的发明一项如此伟大的发明5.5.在我们的日常生活中在我们的日常生活中6.6.似乎做某事似乎做某事7.7.有道理有道理8.8.不同发明的先驱们不同发明的先驱们9.9.被某人发明被某人发明10.10.在那个时候在那个时候11.11.被广泛使用被广泛使用with pleasure(用于接受别人的请求用于接受别人的请求)the subject for my school pro
8、jecthelp me think of an invention in our daily livesseem to do sth.be used widely have a point the pioneers of different inventionsbe invented by sb at that time=be widely usedsuch a great invention/so great an invention=It seems that.Paul:Hey Roy,the subject for my school project is“Small invention
9、s that changed the world”.Can you help me think of an invention?Roy:With pleasure!Let me think.hmm.I know!The zipper!Paul:The zipper?Is it really such a great invention?Roy:Think about how often its used in our daily lives.You can see zippers on dresses,trousers,shoes,bags.almost everywhere!Paul:Wel
10、l,you do seem to have a pointRoy:Of course!I thought about it because I saw a website last week.The pioneers of different inventions were listed there.For example,it mentioned that the zipper was invented by Whitcomb Judson in 1893.But at that time,it wasnt used widely.Paul:Really?So when did it bec
11、ome popular?Roy:Around 1917.强调句强调句 It seems that you have a point.Review:Do P44 4a1.They sold the fridge at a low price.2.Somebody stole my camera from my hotel room.3.Where did you take these photos?My camera was stolen by somebody from my hotel room.Where were these photos taken by you?The fridge
12、was sold at a low price.sell-sold-sold steal-stole-stolen take-took-taken4.Our parents advised us not to go out alone.5.Different writers translated the book into different languages.We were advised not to go out alone by our parents.The book was translated into different languages by different writ
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