冀教版九年級英語上冊 （DNA-The Story of You）Look into Science!教學(xué)課件

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

比較級前可以用much,even,still,far,abit,alittle,alot等詞加以修飾。Thisunitismucheasierthanthatone.這個單元比那個單元容易得多。2.own的用法

1）adj.自己的（用在所有格后，加強語氣）

Nowaskthesamequestionsaboutyourownteachers.Shemakesallherownclothes.2)vt.有，擁有其名詞形式為owner，意為主人，所有者。

—

Whoownsthebike?—Jackie.Heistheownerofit.3.exceptfor=apartfrom除……以外，只是表示從整體中排除一小部分，前后對比的東西不同類。except=but“除了”前后對比的東西同類常與all,every,no,not,any等連用。besides表示“除……之外，還有”，即包含后面提到的內(nèi)容。eg:Heisagoodmanexceptforhottemper.IhavesaidgoodbyetoalltheteachersexceptMr.Wang.BesidesTom,fiveotherboysalsopassedtheexam.4.notonly...butalso...不但……而且……連接兩個相同的成分，也可以連接兩個分句。當(dāng)接兩個主語時，謂語動詞和后面主語保持一致。

e.g.HelikesnotonlyEnglishbutalsomath.NotonlyyoubutalsoIamateacher.5.relatedto涉及……的；與……有關(guān)的，是relate的過去分詞，常做后置定語修飾前邊名詞。類似于called,named這樣的過去分詞。也可和be動詞構(gòu)成固定表達(dá)berelatedto……,意為“和（與）……相關(guān)，有……關(guān)系?！?/p>

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根據(jù)漢語意思完成句子，每空一詞：1.我們用藍(lán)圖建造房子。

We_______ablueprint_____________ahouse.2.除了窗子小外,這座房子很漂亮。

Thehouseisbeautiful___________thesmallwindows.3.你的頭發(fā)和皮膚有同樣的DNA。

Yourhairhas_________________________yourskin.4.她不但會唱歌，而且會跳舞。

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.KatehastheBcolorofhairhersister.A.sametoB.sameasC.identicalasD.samewith

HomeworkHomework1.WriteapassageaboutDNA,trytotellwhatitis,whereitisfrom,whatthingsyoushowyourparents’DNA?2.PreviewLesson30.

Lesson29

DNA—TheStoryofYou

WarmingupDoyouandthestudentsnearyoulookthesame?Whatisthesame?twinsZhangLiangyinglookslikehermother.DiscussionDoyoulooklikeyourfatherormother?Doyouknowwhy?DoyouknowDNA?Areyourfingerprintsthesameasyourmother's?Newwordsblueprintn.藍(lán)圖repeatv.重復(fù)generaladj.一般的；普遍的complexadj.復(fù)雜的twinn.雙胞胎identifyv.鑒別；確認(rèn)grandsonn.(外)孫granddaughtern.(外)孫女DNA脫氧核糖核酸instructionn.說明patternn.模式relatedadj.有關(guān)的

ListeningTask:Generallyspeaking,a___________isadrawing.__________foridenticaltwins,eachlivingthinghasitsownuniqueDNA.blueprintExceptReadingTask:WheredoesyourDNAcomefrom?Yourparents.IsyourDNAineverypartofyourbody?Yes,itis.YourDNAcomesfromyourparents.Languagenotes1.Exceptforidenticaltwins,eachlivingthinghasitsownuniqueDAN.除了每個雙胞胎之外，每個生物都有他唯一的DNA。1)exceptfor除……以外，只是，排除的不是同類，表示對主要部分的肯定和對局部的否定。Yourarticleisquitegoodexceptforseveralspellingmistakes.你的文章很好，只是有幾處拼寫錯誤。except，besides，but和exceptfor的區(qū)別except“除……之外”，排除后面的人或物，而且排除的內(nèi)容和主語往往是同一類。如：WewenttoseeourteacheryesterdayexceptLiMing.昨天除了李明以外我們都去看我們的老師了（李明沒去）。besides“除……之外，還有”，包括該詞后面的人或物。如：WeallwenttoseeafilmbesidesLiMing.除李明以外我們也都去看電影了（李明去了）。but““除……之外”,一般用于否定句中，表示”只有……“，如：Thereisnothingbutapeninthepencilcase.鉛筆盒里除了一支鋼筆之外什么也沒有。exceptfor“除……之外”,后面排除的部分和主語不是同一類人或物.如:Themoviewasgoodexceptfortheending.這部電影除了結(jié)局之外都很好。2.FromyourDNA,scientistscanidentifynotonlyyoubutalsopeoplerelatedtoyou.在你的DNA中，科學(xué)家們不但能鑒別你，而且也能鑒別和你有關(guān)系的人。1)notonly…butalso…不但……而且……，連接兩個相同的成分，也可連接兩個分句。連接兩個并列主語時，謂語動詞和臨近主語保持一致；連列兩個并列分句時，notonly置于句首，通常用倒裝結(jié)構(gòu)，也就是說，把notonly引導(dǎo)的分句中的助動詞或be提到主語前面。

HelikesnotonlyEnglishbutalsomath.他不僅喜歡英語，而且喜歡數(shù)學(xué)。NotonlyyoubutalsoIamateacher.不僅你而且我也是一名老師。Notonlydoesheworkhard,butalsoheisveryclever.他不僅工作認(rèn)真，而且很聰明。2)relateto涉及，有關(guān)ThestoryrelatedtotheSecondWorldWar.故事講的是第二次世界大戰(zhàn)的事情。IhaveabookrelatingtotheAutumnHarvestUprising.我有一本關(guān)于秋收起義的書。

I.根據(jù)句意及所給漢語提示寫出單詞。

1.She

(認(rèn)出)thatthemanwasheruncle.2.Theengineerdrewa

(藍(lán)圖)tobuildtheroad.3.Thetwoboysare

(雙胞胎).Theylookthesame.4.Readthe___________(說明)firstbeforeyouusethemachine.5.Please_______(復(fù)述)thewordsafterthetape.Practiceidentifiedblueprinttwinsinstructionsrepeat隨堂練習(xí)11.Everyonewroteagoodpoem_______her.(除了)2._________Tom,fiveotherboysalsopassedtheexam.