Unit4Topic1SectionD (2).ppt
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1、Unit 4 Amazing Science Topic 1 When was it invented ?,Section D,岗脂抄臂盟坡摆印灶诧婶喻稻裤肪市老惜疏幌遵绽速蜘莎鼓典防蹋卒涂辣Unit4Topic1SectionD (2)Unit4Topic1SectionD (2),Whats it used for? Its used for listening to music. Whats it made of? Its made of plastic. Where was it invented? It was invented in Korea. When was it inven
2、ted? It was invented in 1998.,夕找蓄警胖义照褂浇播布俱煌桔嫌无描泡耸豁烯炎姨堪惺廊耗聪硕沽面傀Unit4Topic1SectionD (2)Unit4Topic1SectionD (2),Whats it used for? Its used for communicating easily. Whats it made of? Its made of plastic and metal. Where was it invented? It was invented in America. When was it invented? It was invented
3、 in 1973.,写翰柏姻狈过岭扬潮欣蠢咯圣炙根溅甜无复兜切浚惮蝉科壕豫姨邪柠汕拴Unit4Topic1SectionD (2)Unit4Topic1SectionD (2),What method did you use to find your lost cellphone?,GPS is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. The early explorers used the stars as landma
4、rks to know where they were and in which direction they were going. This method worked well at night as long as the weather was good. But it didnt work so well during the rest of the time.,Lets use the GPS.,n.探险者, 勘探者,圆贺安审百挖章钟抓岔刷颠纸靴顺潜薪殆烟硬闻痪脊奶俘重紧吏辟茹矩奉Unit4Topic1SectionD (2)Unit4Topic1SectionD (2),1.
5、How did the early explorers know where they were? They found out where they were by using stars. 2. Whats the disadvantage of using the stars as guiding marks? Its disadvantage is that it didnt work well when the weather was bad and the stars could not be seen. 3. What is a GPS? Is it useful to use?
6、 It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It is very useful. 4. What do you think the GPS will be used for in the future? ,Read the passage and discuss the questions on Page88.,爸休耿艘遏奔皖句厦砚哈痒佣苑驯巡吠诲馏贡际了熏洞辊札托牵汪微词她Unit4Topic1SectionD
7、 (2)Unit4Topic1SectionD (2),Key words,explore explorer, mark find out, indirection work well, as long as the rest of the time solve, like, use, the shape of great invention,n.标示,记号,符号 v.做记号,做标记,Retell it !,彬锤跑忽颠侩颇宠册谤厚玲庸子创柴问傈蚌粟伞学挫侣晓稚伶统燎竞赦哮Unit4Topic1SectionD (2)Unit4Topic1SectionD (2),根据首字母提示,完成短文。 T
8、hanks to GPS, we can exactly know w _we are now. GPS is like a man-made “star”. It can be u_ in any place and any weather condition to find out our p_. In the past, the early explorers had to use stars in the s_ to tell them where they were, however, this method didnt work well when the weather was
9、bad. So GPS is a great invention that can help humans to better e_ our planets.,here,osition,sed,ky,xplore,Exercise,扔爆脂童芭挤懊迁陷维很愧檀刨徘佐铬轮卫苦轨捆廖乏鸭漫锗它矗黎飘荣Unit4Topic1SectionD (2)Unit4Topic1SectionD (2),Grammar,Passive Voice (),The radio was invented by Guglielmo Marconi in 1895.,When was the digital camera
10、 developed ? Where was it developed? What is a rocket used for?,It was developed in the 1970s. It was developed in Japan. It is used for sending satellites or spaceships into space.,烂鲍浴继憨铀嘎堑蔽胃正坝瓜骆在传缝骚搂额帧宛械舞麓通韭嗜鞠忧谱泡Unit4Topic1SectionD (2)Unit4Topic1SectionD (2),Functions,族呵萄晰晋击函汀外讳樱惋档塌锋号漏窑掷冰陵腿虫兜误蜀活嘻鄙
11、合徐钨Unit4Topic1SectionD (2)Unit4Topic1SectionD (2),Passive voice was /were +done ( ) 1. A big supermarket _in our city last year. A. is built B. were built C. was built ( ) 2.Could you tell me who the radio _ by? A. invents B. invented C. was invented ( ) 3. Many trees and flowers _ in our school las
12、t year. They made our school more beautiful. A. have planted B. were planted C. planted ( ) 4.The children _ swim last month and they can swim very well now. A. are taught B. were taught C. were taught to ( ) 5.It is said that potato chips _by mistake about one hundred years ago. A. were invented B.
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