Unit5

LookintoScience

Lesson29

DNA—TheStoryofYou！Doyoulooklikeyourmotheroryourfather?Doyouknowthereason?BeacuseyourDNAcomesfromyourparents.WordsandPhrases

DNA脫氧核糖核酸

blueprintn.藍(lán)圖generaladj.一般的

complexadj.復(fù)雜的

twinn.雙胞胎

repeat v.重復(fù)；復(fù)述patternn.模式

identifyv.確認(rèn)；鑒別relatedadj.有關(guān)的

grandson n.孫子；外孫granddaughtern.孫女instruction n.指示；說明generallyadv.berelatedto與...有關(guān)grandsonsrelationship關(guān)系ListeningandReadingCarefulReadingReadPara.1----Para.3andanswerthequestions.1.Whatisablueprint?2.Whatistheblueprintoflife?3.Whichismorecomplex,buildingalivingthingorbuildingahouse?4.HowdoesnaturechangetheDNAinlivingthings?5.What

aspects

ofapersonarestronglyinfluencedbyDNAbeforebirth?CarefulReadingReadPara.1----Para.3andanswerthequestions.1.Whatisablueprint?Ingeneral,ablueprintisadrawingthatshowshowtoputahousetogetherwith/usingmanydifferentparts.2.Whatistheblueprintoflife?DNA.3.Whichismorecomplex,buildingalivingthingorbuildingahouse?Buildingalivingthingisfarmorecomplexthanbuildingahouse.4.HowdoesnaturechangetheDNAinlivingthings?IttakesmillionsofyearsfornaturetochangetheDNAinlivingthingstomakethemfittheworldtheylivein.5.WhataspectsofapersonarestronglyinfluencedbyDNAbeforebirth?Aspectssuchasheight,eyecolor,andfootsize.方面ingeneral=generallyspeaking

總的來說much,alot,alittle,abit,even,still,far等修飾形容詞和副詞的比較級。Ittakessb.sometimetodosth.beinfluencedby受...影響haveaninfluenceon對...有影響

what...dowith=how...dealwith如何處理ReadPara.4----Para.8andanswerthequestions.1.DosometwinshavethesameDNA?2.HowcanscientistshelpwithhealthproblemsrelatedtoDNA?3.IsyourDNAineverypartofyourbody?

4.WheredoesyourDNAcomefrom?5.WhatcanscientistsidentifyfromyourDNAbesidesyourself?ReadPara.4----Para.8andanswerthequestions.1.DosometwinshavethesameDNA?2.HowcanscientistshelpwithhealthproblemsrelatedtoDNA?Yes,theydo.TheycanlookforproblemsinDNAandsometimeshelppeoplebeforetheybecomesick.3.IsyourDNAineverypartofyourbody?

Yes,itis.4.WheredoesyourDNAcomefrom?Yourparents.Peoplewhoarerelatedtoyou,suchasparentsandgrandparents.5.WhatcanscientistsidentifyfromyourDNAbesidesyourself?除了...（美中不足）becausedby

由...造成beableto

do=cando能夠做...bethesameas

和..一樣不但...而且berelatedto和..相關(guān)4.Exceptforsometwins,everylivingthinghasitsownuniqueDNA.【辨析】exceptfor,except,besides,but(1)exceptfor“除了”,表示對主體的肯定和局部的否定(2)except“除了……之外”,從整體中排除該部分。(3)besides“除……之外，還有”,表示后面內(nèi)容包含在整體中(4)but“除……之外”,常與no,nothing,none,nobody等詞連用。鞏固練習(xí)1.Weallwentthere________Tom.2.Heisagoodman____________thehottemper.3.Ihavefivebooks____________this.4.Thereisnothing________adeskintheroom.exceptexceptforbesidesbutGrammar定語從句

定語從句是指在句中作定語的______。

先行詞是被定語從句所修飾的詞（通常是名詞或代詞）。

關(guān)系詞，也叫作引導(dǎo)詞，是在從句中替代先行詞，在定語從句中充當(dāng)一定的成分，通常是______或______，作_____時?？梢允÷?。從句主語賓語賓語關(guān)系詞的用法先行詞在從句中作主語在從句中作賓語在從句中作定語指代人who/thatwhom/who/thatwhose指代物which/thatwhich/thatwhose關(guān)系詞1.（黃崗）Youshouldbethankfultothosepeople____helpedyou.A.whichB.whomC.whoD.whose2.（隨州）--Whyareyousoworried?

--I'velostthewatch_____mydadboughtmeonmybirthday.A.whatB.whoC.whoseD.which3.（咸寧）ReadersonCCTVisagreatTVshow_____expressesourtruefeelingsbyreadingaloudinpublic.A.whomB.whoC.whoseD.that定語從句4.Thisisthemostexcitingmatch_____Ihaveeverbeento.A.whoB.whichC.thatD.whose5.Theboy____fatherisadoctorstudiesveryhard.A.whoB.whichC.thatD.whose6.Ilikethehouse_____windowisbig.A.whoB.whichC.thatD.whose7.LiuYangisthefirst

Chinesewomanastronaut____hasevertraveledinspace.A.whoB.whichC.thatD.whose定語從句ExercisesⅠ.Fillinthebankswithcorrectwords。1.Ing______,womenlivelongerthanmen.2.Iswealth__________(和...相關(guān))happiness?3.Ididnothingyesterday____（除了）seeafilm.4.________(除了)runnin