人教版高一英語課件：unit16 Period 3

1、 period 3 task1. go over the text “ franklins famous kite experimentfranklins famous kite experiment ” 一一.useful phrases in the text a number of experimentsa number of experiments do an experiment do an experiment fly high in the rainy sky fly high in the rainy sky get /become charged get /become ch

2、arged a great deal of a great deal of be made of / from be made of / from fix / fasten / tie to fix / fasten / tie to protect from protect from take care that take care that when i had realized that i could use a kite . 二二 .explanation of some sentences 1. benjamin franklin conducted a 1. benjamin f

3、ranklin conducted a number of experiments in _ he number of experiments in _ he showed _ electricity is .showed _ electricity is . 2. here is _ he described one of his 2. here is _ he described one of his experiments. experiments. 3. having realized _ i could use a 3. having realized _ i could use a

4、 kite to attract lightening, i decided kite to attract lightening, i decided to do an experiment.to do an experiment. ( ) which what how that _ the first thunderstorm came, i took _ the first thunderstorm came, i took my condenser to a shed in the field _ my condenser to a shed in the field _ i coul

5、d do my experiment. i was i could do my experiment. i was beginning to think _ the beginning to think _ the experiment would not work.experiment would not work. others followed even before the whole others followed even before the whole string was wet, and i was able to string was wet, and i was abl

6、e to collect and store a great deal of collect and store a great deal of electricity in the condenser.electricity in the condenser. the experiment proves that lightening the experiment proves that lightening and electricity are the same.and electricity are the same. when where that and ( ) task 2:wo

7、rd study read the text again and tick the sentences containing the words “charge,conduct,cross,sharp,tear and tie.” 1.in the eighteenth century, benjamin franklin conducted a number of experiments in which he showed what electricity is. 2.the string was getting charged. 3.most kites are made of pape

8、r, but a kite made of silk will not tear so soon in weather with rain and strong winds. 4.build the frame of the kite by making a small cross of two pieces of light wood. 5.third,tie a silk ribbon to string,just above the key. 6.fix a very sharp piece of metal to the top of the longer stick of the c

9、ross. task3.word formation: compounds are mainly nouns or adjectives that are made up of at least two parts. these parts can be other nouns, adjectives or prepositions. can you guess the following words? 1 .part1=part of the body used when we walk part 2=a round thing to play with part1+part2= answe

10、r: football 2.part1=something we put on our feet part 2=a thing piece of rope part1+part2= answer: shoestring 3.part1=water of ten degrees below zero part 2=a medicine to put on your skin part1+part2= answer: ice cream 4 .part1=the colour of most leaves in spring part 2=the place where the family li

11、ve part1+part2= answer: greenhouse 5.part1=opposite of up part 2=a small city part1+part2= answer: downtown 6 .part1= smaller than the ocean part 2=all the things we eat part1+part2= answer: seafood 7.part1=something you do in your free time part 2=what is under your feet part1+part2= answer: playground 8 .part1= the way into a park or yard part 2=someone keeping or taking care of something part1+part2= answer: gatekeeper 9.part1=the opposite of white part 2=a flat and smooth piece of wood part1+part2= answer: blackboard 10 .part1= a piece of furniture with four legs par