Unit5Lesson29DNA—TheStoryofYou1.學習目標3.重點探究2.自主學習學習導航5.當堂檢測6.課堂總結4.拓展提升

新課導入WhatdoyouknowaboutDNA?學習目標1.掌握本課新單詞：blueprint,general,complex,repeat,twins,pattern,identify,instruction.2.掌握本課新短語：ingeneral,beinfluencedby,exceptfor,berelatedto.3.了解更多關于自然、DNA的事實自主學習blueprintgeneralcomplextwinrepeatpatternidentityrelatedgrandsongranddaughterinstructionn.藍圖adj.一般的；普遍的adj.復雜的n.雙胞胎之一；孿生兒之一v.重復；復述；背誦n.模式；形式v.確認；鑒別adj.有關的；相關的n.孫子；外孫n.孫女；外孫女n.指示；說明Keywordsingeneralexceptforberelatedtobillionsof一般而言；通常除……之外與……相關數十億計的；大量Keyphrases重點探究Doyouwanttoknowthestoryofyou?ThisistheshapeofDNA.Doyouthinkit'smagic?YourDNAcomesfromyourparents.

Whenyoubuildahouse,youuseablueprint.What'sablueprint?Ingeneral,ablueprintisadrawingthatshowshowtoputahousetogetherwithmanydifferentparts.DNAistheblueprintoflife.Butbuildingalivingthingisfarmorecomplexthanbuildingahouse.IttakesmillionsofyearsfornaturetochangetheDNAinlivingthingstomakethemfittheworldtheylivein.Howtallareyou?Whatcolourareyoureyes?Whatsizeareyourfeet?AllthesethingsarestronglyinfluencedbyyourDNAbeforeyouareborn!

DNAisfantastic!

·Exceptforsometwins,everylivingthinghasitsownuniqueDNA.

·SomehealthproblemscanbecausedbyproblemsinyourDNA.Scientistscanlookfortheseproblemsand,sometimes,helpyoubeforeyoubecomesick.Inthefuture,scientistsmightbeabletochangeyourDNA.

·TherearecopiesofyourDNAineverypartofyourbody.Forexample,yourfingerhasthesameDNAasyourhair.

·YouhaveyourownuniqueDNA,butitrepeatspatternsfromyourparents'DNA.FromyourDNA,scientistscanidentifynotonlyyou,butalsopeoplewhoarerelatedtoyou.Yourparentsandgrandparentsarerelatedtoyou,andyouhavetheirDNA.Whenyouhaveagrandsonorgranddaughter,heorshewillhaveyourDNA.YourDNAhasbillionsofinstructionsthatexplainwhyyouarethewayyouare.It'soneofthemostamazingthingsontheearth!1Readthetextandanswerthequestionsbelow.1.Whatisablueprint?Ingeneral,ablueprintisadrawingthatshowshowtoputahousetogetherwith/usingmanydifferentparts.2.Whichismorecomplex,buildingalivingthingorbuildingahouse?Buildingalivingthing.3.DosometwinshavethesameDNA?Yes,theydo.4.IsitpossibletochangeyourDNA?Yes,itis.Inthefuture,scientistsmightbeabletochangeourDNA.AfterreadingLet'sDoIt!2Fillintheblankswiththephrasesinthebox.1.Yourhomeworkisquitegood_________afewspellingmistake.2._______theyoung_______theoldlikepopmusic.3.Kate'shairis______colour______hersisiter's.4.________,womenlivelongerthanmen.5.______manydifficultiesremain,wecanovercomethem.6.Iswealth________happiness?ingeneralexceptfornotonly...butalsorelatedtoevenifthesame…asexceptforNotonlybutalsothesameasIngeneralEvenifrelatetoChangingDNA

DoyouknowDNAcanbechanged?Haveyoueverseenapigwithadog'sbody?Ofcoursenot!Pigsanddogscan'thavebabiestogether.______Butnow,scientistscandoit.ScientistscantakeDNAfromonekindofanimalandputitintoanotherkindofanimal.TheycandesignnewplantsbycombiningtheDNAofotherplants.______Somescientistsareworried.TheysayweneedtoknowmoreaboutDNAbeforewestartchangingit.______Butwhatiftheplantsarebadforhumans,too?ACBLet'sDoIt!3Completethepassagewiththesentencesinthebox.A.TheirDNAcan'tcombine.B.Wecanmakeplantsthatarebadforpests.C.TheycanevencombinetheDNAofaplantandananimal.拓展提升1.Ingeneral,ablueprintisadrawingthatshowshowtoputahousetogetherwithmanydifferentparts.

ingeneral一般而言；總的來說

同義短語：generallyspeakinge.g.Ingeneral,Iagreewithyou.

或：Generallyspeaking,Iagreewithyou.2.AllthesethingsarestronglyinfluencedbyyourDNAbeforeyouareborn!

influence及物動詞，(間接的、潛移默化的)影響

短語：beinfluencedby受……的影響e.g.Hewasinfluencedbyhisfathertobeateacher.

拓展：influence名詞短語：haveaninfluenceonsb./sth.3.Exceptforsometwins,everylivingthinghasitsownuniqueDNA.短語：exceptfor除……之外e.g.Themovieisgoodexceptfortheending.4.FromyourDNA,scientistscanidentifynotonlyyou,butalsopeoplewhoarerelatedtoyou.

短語：berelatedto和……有聯系；和……有關

e.g.I'mnotrelatedtohimanymore.

拓展：relateto把……和……聯系起來當堂檢測一、用所給單詞的適當形式填空。1._____(介詞)general,heisneverlateforschool.2.Doyouknowwhoisthe_________(own)ofthehouse?3.Yourbodyusesthispattern_________(build)itself.4.Somehealthproblemscomefromyourfamily’sDNA._________(science)canlookfortheseproblemsinyourDNA.InownertobuildScientists二、完成句子。

1.一般來說，女人比男人活得更長。

____________,womenarelivelongerthanmen.2.你的作文相當好，除了一些拼寫錯誤外。

Yourcompositionisquitegood____________afewspellingmistakes.3.現如今，不管是年輕人還是老年人都喜歡流行音樂。____________theyoung____________theoldlikepopmusicnowadays.

4.我認為財富與幸福沒關系。Idon