冀教版九年级上册英语课件：unit5 Lesson 29 DNA--The Story of You(共23张PPT).ppt

1、Lesson 29Unit 5 Look into Science5Lesson 29 DNA-The Story of You学习目标objectivesThe new words:DNA,blueprint,general,complex,twin,repeat,pattern,identify,related,grandson,granddaughter,instruction Train the speaking and writing abilities.DNA blueprint general complex twin repeat pattern identify relate

2、d grandson granddaughter instructionNew WordsDo you and the students near you look the same?What is the same?Warming upLead inThink about it!1.What do you know about DNA?2.What can scientists do with DNA?This is the shape of DNA.Do you think its magic?“DNA”is short for deoxyribonucleic acid.The two

3、girls are twins.Maybe they have the identical DNA.identical（adj)-identify(v.)Why?Fang Zuming looks like his fatherCheng Long.Listening TaskGenerally speaking,a _ is a drawing._ for identical twins,each living thing has its own unique DNA.blueprintExceptWhile-readingRead the lesson and answer the que

4、stions：1.What is a blueprint?2.Which is more complex,building a living thing or building a house?3.Do some twins have the same DNA?4.Is it possible to change your DNA?5.Whose DNA is related to yours?1.What is a blueprint?2.Which is more complex,building a living thing or building a house?3.Do some t

5、wins have the same DNA?Its a drawing that shows how to put a house together with many different parts.Building a living thing is far more complex than building a house.Yes,they are.4.Is it possible to change your DNA?5.Whose DNA is related to yours?In the future,scientists might be able to change my

6、 DNA.My parents and grandparents.1.But building a living thing is far more complex than building a house.Language points比较级前可以用much,even,still,far,a bit,a little,a lot 等词加以修饰。This unit is much easier than that one.这个单元比那个单元容易得多。2.own 的用法1）adj.自己的（用在所有格后，加强语气）Now ask the same questions about your own

7、 teachers.She makes all her own clothes.2)vt.有，拥有Who owns the bike?3.except for 除以外，只是 He is a good man except for hot temper.Your article is quite good except for several spelling mistakes.4.not only.but also.不但而且连接两个相同的成分，也可以连接两个分句。当接两个主语时，谓语动词和后面主语保持一致。e.g.He likes not only English but also math.

8、Not only you but also I am a teacher.5.relate to 涉及；有关e.g.The story related to the Second World War.I have a book relating to the Autumn Harvest Uprising.Post-readingFree TalkIs it a good idea to change the DNA of the food we eat?WritingWrite down your ideasPracticeFill in each blank with the proper

9、 word.1.This is the _(identify)hotel that we stayed in last year.2.Your brothers are people _(relate)to you.3.Do you know who is the _(own)of the house?4.Your body uses this pattern _(build)itself.identicalrelatedownerto build5.You have your own DNA,but it repeats the patterns from your _(parent)DNA

10、.6.Some health problems come from your familys DNA._(science)can look for these problems in your DNA.parentsScientists根据汉语意思完成句子，每空一词：1.我们用蓝图建造房子。We _ a blueprint _ _ a house.2.除了窗子小外,这座房子很漂亮。The house is beautiful _ _ the small windows.3.你的头发和皮肤有同样的DNA。Your hair has _ _ _ _ your skin.4.她不但会唱歌，而且会跳舞。She can _ _ sing _ _ dance.use to buildexcept forthe same DNA asnot onlybut alsoHomeworkHomework1.Write a passage about DNA,try to tell what it is,where it is from,what things you show your parents DNA?2.Preview Lesson 30.