英语高二下北师大版Unit21《Human Biology》(Lesson 2)课件2

课件16张PPT。Brain
Power Test your memory :
Look at the following numbers for about one
minute and then write down as many as you
can 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 following
words .atom , billion , cell , nerve cell ,
organ , fun_ction , sight ,
hearing ,fear atom , billion , cell , nerve cell ,organ ,
fun_ction , sight , hearing , fear 1.The eyes are the organs of .
2.How many are there in the universe ?
3.Human tissue (组织) is made up of .
4.The liver is an and so is the heart.
5.The population of China reaches up to
1.3 .sightatomscellsorganbillionatom , billion , cell , nerve cell ,organ ,
fun_ction , 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 of
hardship or death .functionnerve cellfearListening Strategies : Completing a text
1 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 information you need
should follow them .
4 You can complete the gaps using
abbreviations (简写) – 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 word(s) before each gap :1. consist of 6. are responsible for
2. weighs 7. controlling
3. energy 8. signals
4. 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 general idea.
Don’t 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. white2. 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 two
minutes and then write down as many as
you can remember .
Try to find out their relationship .
( It helps you to remember better. ) Tell your partner :
How can you manage to remember
new words ?