Lesson-29-DNA-The-Story-of-You-优质公开课-冀教9全精品.ppt

1、Lesson-29-DNA-The-Story-of-You-优质公开课-冀教9全精品Lesson 29:DNAThe Story of YouI.Learning aims:The new words:DNA,blueprint,general,complex,twin,repeat,pattern,identify,related,grandson,granddaughter,instruction II.Train the speaking and writing abilities.DNA blueprint general complex twin repeat pattern id

2、entify related grandson granddaughter instructionWarming upDo you and the students near you look the same?What is the same?Zhang Liangying looks like her mother.Identical twins are two children that grew from the same egg.They have identical DNA.Theyre clones!Do you and the students near you look th

3、e same?What is the same?Are there any differences between you and them?What can scientists do with“DNA”?Free TalkListening TaskGenerally speaking,a _ is a drawing._ for identical twins,each living thing has its own unique DNA.blueprintExceptReading TaskWhere does your DNA come from?Your parents.Is y

4、our DNA in every part of your body?Yes,it is.Listen and ThinkDo you and the students near you look the same?Are there differences between you and them?What can scientists do with“DNA”?1.But building a living thing is far more complex than building a house.Language points 比较级前可以用比较级前可以用much,even,stil

5、l,far,a bit,a little,a lot 等词加以修饰等词加以修饰。This unit is much easier than that one.这个单元比那个单元容易得多。2.own 的用法的用法 1）adj.自己的自己的（用在所有格后，加强语（用在所有格后，加强语气）气）Now ask the same questions about your own teachers.She makes all her own clothes.2)vt.有，拥有有，拥有 Who owns the bike?3.except for 除除以外，只是以外，只是 He is a good man

6、except for hot temper.Your article is quite good except for several spelling mistakes.4.not only.but also.不但不但而且而且连接两个相同的成分，也可以连接两个分句。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当接两个主语时，谓语动词和后面主语保持一致。持一致。e.g.He likes not only English but also math.Not only you but also I am a teacher.5.relate to 涉及；有关涉及；有

7、关 e.g.The story related to the Second World War.I have a book relating to the Autumn Harvest Uprising.Students discuss these with their partners,then say out in class.Lets do itexceptBesides Except forexcept besidesexceptamnot only Chinese but also Englishnot only but also knows5.Neither they nor I _ good at singing.A.are B.be C.is D.am 6.Both my father and I _ in the country.A.enjoys living B.enjoy to live C.enjoys to live D.enjoy livingDD1.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.Thanks！