高一英语必修二unit4Usinglanguag

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1、Unit4UsingLanguageextinctiondinosaurinspectincidentdustfiercen.灭绝；消亡n.恐龙vt.检查；视察n.事件；事变n.灰尘；尘土；尘埃adj.凶猛的；猛烈的Wordspreviewcomeintobeingaccordingto形成；产生按照；根据……所说ExpressionspreviewAnimalextinctionReadingFastreading1.Whendiddinosaurslive?2.Whendiddinosaurs

2、dieout?Tensofmillionsofyearsago.About65millionyearsago.3.AccordingtotheUNreport,howmanyanimalsandplantshavedisappearedinthelast500years.844Detailedreading:TrueorfalseThereweremanydifferentkindsofdinosaurandallofthemhavebeenfoundinChina.Notlongago,arar

3、enewspeciesofbird-likedinosaurwasdiscoveredinHenanProvince.anumberLiaoningFF3.Somescientistsaresuredinosaursdiedoutbecausetheearthgottoohotforthedinosaurstoliveonanymore.4.Dinosaursdiedoutsuddenlyabout65millionyearsagoandmanyanimalshavedisappearedinth

4、elast500years.FTthinkDiscussthepossiblereasonsforthedisappearanceofdinosaurs.Thinkaboutwhatismentionedinthetext.1.Itcameafteranunexpectedincidentwhenahugerockfromspacehittheearthandputtoomuchdustintotheair.2.Theearthgottoohottoliveon.Discussthepossibl

5、ereasonsforthedisappearanceofdinosaurs.Theremaybeotherreasonsforit.ForreferenceThesuddenmassextinctionofthenon-aviandinosaurs,whichoccurredaround65millionyearsago,isoneofthemostintriguingmysteriesinpaleontology(古生物学).Thenatureoftheeventthatcausedthism

6、assextinctionhasbeenextensivelystudiedsincethe1970s.Atpresent,severalrelatedtheoriesarebroadlysupportedbypaleontologists:AsteroidcollisionMultiplecollisionsEnvironmentchangesdodo渡渡鸟ListeningBeforelisteningtothedodo’sstory,trytopredictinpairshowitmight

7、havebecomeextinct.Listentothetapeandchoosethesentenceonpage30whichgivesthemainideaofthestory:Thisstoryisabouthowthedodobecameextinct.No1iswrong.Itisnotfairtoblamethedodoforhisdisappearance.No3onlyexplainshalfthestory.Thedodoandmandidbecomefriendsbuton

8、lybecausemanwantedtokillthedodosaseasilyaspossible.No4iswrongbecausetheotheranimalsandbirdsdidnotdomuchtosavethedodo.Theywarnedhimbutdidnothelphim.Listentothetapeandchoosethecorrectanswertocompleteeachsentenceonpage30.Keys:1C2B3CListeningtextT