高一英语UNIT16课件.ppt

Unit 16 Scientists at work,Thomas Edison,The light bulb,Pre-reading,Alexander Bell,Albert Einstein,The theory of relativity,Darwin (evolutionism),Louis Pasteur (germs),Newton (The Theory of Gravity),They all need electricity,Flashlight,Computer,Television,Cell phone,Do you know who discovered electricity?,Benjamin Franklin(1706-1790),printer diplomat (外交官) statesman (政治家) philosopher (哲学家) inventor scientist,How did he discover electricity?,Benjamin Franklin discovered electricity by doing / conducting a kite experiment.,While-reading,Look at the textbook and listen to the tape carefully, then try to complete the following chart.,Task 1,A record of the experiment,Kite Experiment,Franklin and his son,Lightning and electricity are the same.,a kite, a key, some really bad weather and a condenser,In June 1752,Things we need,a kite,bad weather( thunderstorm),a key,a condenser,a shed,Task 2,Read the text quickly and try to get the main idea of each paragraph.,Part 1 (Para.1) Introduction. Part 2 (Para. 2-3) Process of the experiment. Part 3 (Para. 4-6) The steps of making a kite and doing the experiment.,a small cross,a handkerchief,add a tail,fix a sharp piece of metal,fasten a key,tie a silk ribbon,tie a long string,Make a kite,Task3:Read the following statements and decide if they are T or F.,1.In 1752 scientists already knew what electricity is. 2.Franklin was helped by a friend to do the experiment. 3.Franklin made the kite of silk because wet silk does not conduct electricity. 4.A condenser was used in the experiment to store electricity. 5.The key tied to the string was put into the door to stop the kite from flying away.,T,F,T,F,F,1.Before his experiment, Franklin had to prepare the following EXCEPT_ A: a strong kite B: really bad weather C: a metal key D: a condenser In Franklins experiment, the kite was used _ A. to fly for fun. B. to attract lightning C. to attract thunder. D. to collect the electricity,Task4:Do the multiple choices,3. Which of the following is in the correct order? The experiment proves that lightning and electricity are the same. The kite flew high in the rainy sky. He made a silk kite. Very sharp piece of metal was fixed. A key was fastened to the end of the string. A ribbon was tied to the string.,A . B. C. D. ,4 . In doing the experiment it is better to make the kite of silk than of paper because_. A. The kite made of silk is more beautiful than of paper. B. The kite made of silk is lighter than of paper. C. The kite made of silk can last longer in bad weather D. The kite made of silk can conduct electricity while a,than a paper kite.,paper kite cant.,5. Which is not stated but can be inferred from the text? Franklin did the experiment with the kite. Franklins experiment with electricity was dangerous. Franklin failed the experiment again. The experiment was conducted in bad weather.,6. The text is mainly about_? How to make a strong kite and fly high in the sky a number of experiments to show what electricity is. an experiment to prove that lightning and electricity are the same. How to use a kite to attract lightning make use of it in our everyday life.,Title,Experimenter,Kite experiment,Franklin,Purpose,Materials,steps,Result,1. Make a kite;,Task5:Read the text quickly and finish the following experiment report.,2.,3.,4.,5.,Fix ,Fasten,Tie,Fly ,a very sharp piece of,a key to the end,a silk ribbon to,the kite when a,Language points: 1.Having realized that I could use a kite to attract lightning, I decided to ,=After I realized that I could use, I Having finished the homework, Tom went out to play. Not having heard from his girl friend, Peter wrote again. Walking in the street, he met his head teacher. =When he was walking, he met,Practice: true or false?,Having worked for the whole day, she felt really tired. Having rained for two days, the children couldnt wait to go outside.,(),(),2. Tie the corners of the handkerchief to the points of the cross, and you will have a nice strong kite. = If(When) you tie the corners of the handkerchief to the points of the cross, you will have a nice strong kite.,祈使句+and+陈述句=If（When), you will ,祈使句+or/ or else/ otherwise+陈述句 =If (not）, (you) will Work harder and you will find it not difficult to learn. Hurry up, or you will be late. Be careful, otherwise you will make another mistake.,Practice: true or false? 1. If you are careful enough, and you will make greater progress. 2. Help him with his English, or he will be thankful to you all his life.,(),(),3. a great deal of/ a good deal of “许多, 大量” a large amount of much a lot of/ lots of plenty of a large number of large numbers of many,+不可数名词,+不可数名词 或可数名词复数,+可数名词复数,Practice,1.He has_knowledge as well as _friends. A. many, a great deal of B. a great deal of, a number of C. a great deal, plenty of D. a plenty of, lots of 2. A great deal _to stop pollution. A: have done B: has done C: have been done D: has been done,B,D,Benjamin Franklin was a famous American scientist. In June 1752, he did a kite experiment to _ that lightning and electricity are the same. He made a kite ,which could _lightning. The kite was made of_ so that it would not _ too soon. He _ a very sharp piece of metal and then _ a key to the _of the long string and finally he_ a silk _ to the string, just _the key. When a _ appeared, he went to a _in the field and flew the kite to the sky. Soon he saw the hairs on the string _ _ because the string got_. He brought his finger to the string and felt a light but clear _ _. With the help of a key and a _,he was able to _ a gre