（新教材）2019-2020学年外研版英语必修第三册课件：UNIT 3　THE WORLD OF SCIENCE .ppt

1、外研版英语必修第三册返回导航下页上页外研版英语必修第三册返回导航下页上页 单元知识目标(1)重点词汇：press;shoot;flexible;capable;stuff;desire;passive;beyond;significant;injure;accurate;minor;origin;species;extraordinary;brilliant;theory;mental;cure;declaration;experiment;fiction;metal;attach;flash;conduct;entirely;account;proof;procedure(2)重点短语：in

2、 addition;never say never;in terms of;take place;come up with(3)单元语法：现在完成时的被动语态(4)单元写作：实验报告外研版英语必修第三册返回导航下页上页课前情境导入外研版英语必修第三册返回导航下页上页本杰明富兰克林不仅是记者、作家、慈善家，更是杰出的外交家及发明家。他是美国独立战争时重要的领导人之一。本杰明富兰克林曾经进行多项关于电的实验，并且发明了避雷针，最早提出电荷守恒定律。让我们通过下文一起了解本杰明富兰克林的一系列的实用发明物吧！外研版英语必修第三册返回导航下页上页A list of Benjamin Franklins

3、 inventions reveals a man of many talents and interests.His natural curiosity about things and the way they work made him try to find ways to make them work better.Ben had poor vision and needed glasses to read.He got tired of constantly taking them off and putting them back on，so he decided to figu

4、re out how his glasses would let him see both near and far.He had two pairs of glasses cut in half and put half of each lens(镜片)in a single frame.Today，we call them bifocals(双光眼镜)外研版英语必修第三册返回导航下页上页Everyone knows the story of Bens famous kite flight.Although he made important discoveries and advancem

5、ents，Ben did not“invent”the electricity.He did，however，invent the lightning rod which protects buildings and ships from lightning.In colonial America，most people warmed their homes by building a fire in a fireplace even though it was dangerous and used a lot of wood.Ben figured that there had to be

6、a better way.His invention of an iron furnace stove allowed people to warm their homes less dangerously and with less wood.The furnace stove that he invented is called the Franklin Stove.Interestingly enough，Ben also established the first fire company and the first fire insurance company in order to

7、 help people live more safely.外研版英语必修第三册返回导航下页上页As a postmaster，Ben had to figure out routes for delivering the mail.He went out riding in his carriage to measure the routes and needed a way to keep track of the distance.He invented a simple odometer(里 程 表)and attached it to his carriage.Later，other famous inventors，like Tomas AEdison and Alexander Graham Bell，followed in Bens footsteps by trying to find ways to help people live better.