高中英語(yǔ)Unit-21-Lesson-2-《Brain-Power》3-北師大版-選修7PPT優(yōu)秀課件

1、Brain Power Test your memory :Look at the following numbers for about oneminute and then write down as many as youcan remember .73 49 64 83 41 27 62 29 38 93 74 97 How is your memory ?more than 9, 7-8 , 4-6 ,less than 3Before you start :Complete the sentences with the followingwords .atom , billion

2、, cell , nerve cell ,organ , function , sight , hearing ,fear atom , billion , cell , nerve cell ,organ , function , sight , hearing , fear 1.The eyes are the organs of .2.How many are there in the universe ?3.Human tissue (組織) is made up of .4.The liver is an and so is the heart.5.The population of

3、 China reaches up to 1.3 .sightatomscellsorganbillionatom , billion , cell , nerve cell ,organ , function , sight , hearing , fear 6.The of the heart is to pump blood through the body . 7.A is a tiny part of the body that helps carry messages to and from the brain .8.He will finish the job without o

4、f hardship or death .functionnerve cellfearListening Strategies : Completing a text1 Before you listen , read the text and predict what kind of information you need .2 Underline some important words in the text before each gap(空格) .3 While you are listening , listen for these important words the inf

5、ormation you need should follow them .4 You can complete the gaps using abbreviations (簡(jiǎn)寫) save time , then write them in full .Important word(s) and our predictionsFor example :1.consist of a color 2.weighs how heavy ?(number)3.energy how much ?(number)4. contain how many much ? (number) Important

6、word(s) before each gap :1. consist of 6. are responsible for2. weighs 7. controlling 3. energy 8. signals4. contain 9. emotions 5. more than 10. own (language)Listening :Listen to the science lesson . Use the strategies to complete the gaps in Ex 2.Listening :1 Listen for the first time : get a gen

7、eral idea. Dont hurry to write down your answers .2 Listen again : write down your answers and check with your partners .3 Listen for the last time : check your answers again and make sure they are right .Listening :Remember , you may need more than one word in each gap .Check your answers :1. white

8、2. just over a kilo3. 20 4. 100 billion cells5. atoms in the universe6. different functions7. sight and hearing8. all the time9. fear10. foreignA challenge :Look at the following words for about twominutes and then write down as many as you can remember .Try to find out their relationship .( It helps you to remember better. ) chewdigestionnormalworldgumget throughcurepull throughfamoussugar-freeabnormal digestivecancerput offsevereflyingpostpone go throughmachinedigestchewdigestionnormalworldgumget throughcurepull throughfamoussugar-fr