冀教版九年级英语上册 （DNA-The Story of You）Look into Science!教学课件

5UnitLesson29DNA-TheStoryofYou

DNAblueprintgeneralcomplextwinrepeatpatternidentifyrelatedgrandsongranddaughterinstructionNewWordsWarmingupDoyouandthestudentsnearyoulookthesame?Whatisthesame?LeadinThinkaboutit!WhatdoyouknowaboutDNA?2.WhatcanscientistsdowithDNA?ThisistheshapeofDNA.Doyouthinkit’smagic?“DNA”

isshortfordeoxyribonucleicacid.Thetwogirlsaretwins.Maybetheyhavetheidentical

DNA.

[identical（adj)---identify(v.)]Why?FangZuminglookslikehisfather—ChengLong.ListeningTaskGenerallyspeaking,a________isadrawing.______foridenticaltwins,eachlivingthinghasitsownuniqueDNA.blueprintExceptWhile-readingReadthelessonandanswerthequestions：Whatisablueprint?Whichismorecomplex,buildingalivingthingorbuildingahouse?DosometwinshavethesameDNA?IsitpossibletochangeyourDNA?WhoseDNAisrelatedtoyours?Whatisablueprint?Whichismorecomplex,buildingalivingthingorbuildingahouse?DosometwinshavethesameDNA?It’sadrawingthatshowshowtoputahousetogetherwithmanydifferentparts.Buildingalivingthingisfarmorecomplexthanbuildingahouse.Yes,theyare.4.IsitpossibletochangeyourDNA?5.WhoseDNAisrelatedtoyours?Inthefuture,scientistsmightbeabletochangemyDNA.Myparentsandgrandparents.1.Butbuildingalivingthingisfarmorecomplexthanbuildingahouse.

Languagepoints

比较级前可以用much,even,still,far,abit,alittle,alot等词加以修饰。Thisunitismucheasierthanthatone.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）

Nowaskthesamequestionsaboutyourownteachers.Shemakesallherownclothes.2)vt.有，拥有其名词形式为owner，意为主人，所有者。

—

Whoownsthebike?—Jackie.Heistheownerofit.3.exceptfor=apartfrom除……以外，只是表示从整体中排除一小部分，前后对比的东西不同类。except=but“除了”前后对比的东西同类常与all,every,no,not,any等连用。besides表示“除……之外，还有”，即包含后面提到的内容。eg:Heisagoodmanexceptforhottemper.IhavesaidgoodbyetoalltheteachersexceptMr.Wang.BesidesTom,fiveotherboysalsopassedtheexam.4.notonly...butalso...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.HelikesnotonlyEnglishbutalsomath.NotonlyyoubutalsoIamateacher.5.relatedto涉及……的；与……有关的，是relate的过去分词，常做后置定语修饰前边名词。类似于called,named这样的过去分词。也可和be动词构成固定表达berelatedto……,意为“和（与）……相关，有……关系。”

e.g.IhaveabookrelatedtotheAutumnHarvestUprising.ThestoryisrelatedtotheSecondWorldWar.Post-readingFreeTalkIsitagoodideatochangetheDNAofthefoodweeat?WritingWritedownyourideas……PracticeFillineachblankwiththeproperword.1.Thisisthe__________(identify)hotelthatwestayedinlastyear.2.Yourbrothersarepeople_________(relate)toyou.3.Doyouknowwhoisthe_________(own)ofthehouse?4.Yourbodyusesthispattern_________(build)itself.identical

relatedownertobuild5.YouhaveyourownDNA,butitrepeatsthepatternsfromyour__________(parent)DNA.6.Somehealthproblemscomefromyourfamily’sDNA._________(science)canlookfortheseproblemsinyourDNA.

parents’Scientists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_______ablueprint_____________ahouse.2.除了窗子小外,这座房子很漂亮。

Thehouseisbeautiful___________thesmallwindows.3.你的头发和皮肤有同样的DNA。

Yourhairhas_________________________yourskin.4.她不但会唱歌，而且会跳舞。

Shecan___________sing______________dance.usetobuildexceptforthesameDNAasnotonlybutalsoChoosingthecorrectanswers1.YourcompositionisquitegoodAafewspellingmistakes.A:exceptforB:exceptC:besideD:besides

2.NeithertheynorIDgoodatsinging.A.areB.beC.isD.am3.TheteacherhasgiventheanswersDthequestions.

A.withB.forC.ofD.to

4.BothmyfatherandIAinthecountry.A.enjoyslivingB.enjoytoliveC.enjoystoliveD.enjoyliving6.FromyourDNA,scientistscanidentifyyouandpeopleAtoyou.A.relatedB.relatesC.relatingD.relate5.KatehastheBcolorofhairher