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lovenature!第6課時(shí)Unit8Lesson6LearningLearningobjectives通過本節(jié)課的學(xué)習(xí)，學(xué)生能夠：1.通過閱讀活動(dòng)，獲取梳理與地球歷史演變相關(guān)的信息；2.通過小組合作，討論和分享關(guān)于保護(hù)地球的具體行動(dòng)；3.運(yùn)用所學(xué)詞匯和語法結(jié)構(gòu)，表達(dá)地球與人類關(guān)系話題的觀點(diǎn)；4.培養(yǎng)學(xué)生關(guān)注環(huán)保，激發(fā)保護(hù)地球的責(zé)任感和行動(dòng)力。重點(diǎn)重點(diǎn)LookandsayLookatthepicturesandtalkwithyourpartners.Doyouknowhowoldtheearthis?Whatdoyouknowabouttheageofdinosaurs?Whendidhumansappear?LookandsayAlong,longtimeago,therewasamagicalbigbangintheuniverse.Afterthat,overalongperiod,theearthgraduallyformed.Theearthattheverybeginningwasnotlikeitisnow.

Let’sreadapassageaboutTimeontheearth.Thinkaboutthequestionsandyou’llreadapassageabouttheearth.ReadandwriteReadthepassageandwritetrue(T)orfalse(F).Ourplanetisabout4.6billionyearsold.Accordingtothelatestresearch,humansappearedonly2.5millionyearsago.

Ifweshortenthisintooneday,humansappearedinthelasttwominutes.Howdidthathappen?

Midnightontheearthstartedwithaburstofvolcanoes.Around3to4a.m.,lifeappearedatthebottomoftheoceans.At6p.m.,waterandsunlightbegantoprovideenergyforlife.Allkindsofplantsstartedtogrow.At9p.m.,theearthgavebirthtodifferentcreatures.At11:30p.m.,dinosaursappeared.Theywereoneofthelargestcreaturesinthehistoryoftheearth.Thelast20minutesofthedaywasthe“busiest”time:aftertheageofdinosaurs,itwastheageofallkindsofanimals,includinghumans.ATheearthhasalonghistory. （）BDinosaursarrivedlastontheearth.

（）TFReadandanswerReadthepassageandfindoutthemainideaofeachparagraph.Ourplanetisabout4.6billionyearsold.Accordingtothelatestresearch,humansappearedonly2.5millionyearsago.

Ifweshortenthisintooneday,humansappearedinthelasttwominutes.Howdidthathappen?

Midnightontheearthstartedwithaburstofvolcanoes.Around3to4a.m.,lifeappearedatthebottomoftheoceans.At6p.m.,waterandsunlightbegantoprovideenergyforlife.Allkindsofplantsstartedtogrow.At9p.m.,theearthgavebirthtodifferentcreatures.At11:30p.m.,dinosaursappeared.Theywereoneofthelargestcreaturesinthehistoryoftheearth.Thelast20minutesofthedaywasthe“busiest”time:aftertheageofdinosaurs,itwastheageofallkindsofanimals,includinghumans.①②Comparetheearth’shistoryandhumanappearancetimeandraiseaquestion.Listmajoreventsandlifeappearanceina“one-day”timeline.ReadandanswerReadpara.1andchoosethecorrectanswers.Ourplanetisabout4.6billionyearsold.Accordingtothelatestresearch,humansappearedonly2.5millionyearsago.

Ifweshortenthisintooneday,humansappearedinthelasttwominutes.Howdidthathappen?①1.Howdoesthewriterbeginthetext?2.Howoldwasourplanetwhenhumansappeared?A.About2.1billionyearsold.B.About2.1millionyearsold.C.About4.5975billionyearsold.D.About4.5975millionyearsold.

A.Bytellingastory.B.Byshowingfacts.C.Bygivingasaying. D.Bylistingthenumbers.ReadandanswerReadpara.2andfinishthetasks.

Midnightontheearthstartedwithaburstofvolcanoes.Around3to4a.m.,lifeappearedatthebottomoftheoceans.At6p.m.,waterandsunlightbegantoprovideenergyforlife.Allkindsofplantsstartedtogrow.At9p.m.,theearthgavebirthtodifferentcreatures.At11:30p.m.,dinosaursappeared.Theywereoneofthelargestcreaturesinthehistoryoftheearth.Thelast20minutesofthedaywasthe“busiest”time:aftertheageofdinosaurs,itwastheageofallkindsofanimals,includinghumans.②2.Circlethetimeinthisparagraph.1.Itwasshortenedintooneday.Sothispartwasorganizedin________order.time3.Whendidlifefirstappearontheearth?Around3to4a.m..4.Whendidhumansappear?Inthelast20minutes.ReadandcompleteReadthepassageagainandcompletethetable.TimeWhathappenedmidnightburstofvolcanoesaround3to4a.m.lifeappearedat6p.m.waterandsunlightbegantoprovideenergy;

plantsstartedtogrowat9p.m.theearthgavebirthtodifferentcreaturesat11:30p.m.dinosaursappearedthelast20minutestheageofallkindsofanimals,includinghumansWorkinpairsDiscussthequestionswithyourpartner.AWhat’stherelationshipbetweentheearthandhumans?BWhatwillhappentotheworldinthefuture?CWhatwillyoudotoprotecttheearth?AWhat’stherelationshipbetweentheearthandhumans?BWhatwillhappentotheworldinthefuture?CWhatwillyoudotoprotecttheearth?AWhat’stherelationshipbetweentheearthandhumans?Theearthishumans’home.Itgivesusair,waterandlandtoliveon.Whatwedocanchangetheearth,eitherinagoodorbadway.BWhatwillhappentotheworldinthefuture?Ifwedon’tcareabouttheenvironment,therewillbebigproblems.Butifwetrytoprotecttheearth,theworldwillbebetter.CWhatwillyoudotoprotecttheearth?Iwillrecyclethingstomakelessrubbish,andsavewaterandelectricity.I’lltakebusesorridebikesmoreofteninsteadofdriving.TalkandshareTalkingroupsandshareyourideaswithyourclassmates.Itisaneventthatencouragespeopletosavetheearth.UsefulexpressionsWecan....Weshould...Weshouldnot....DoyouknowWorldEarthDayisonApril22everyyear?Whatkindofactivitiescanyoudotohelpsavetheearth?TalkandshareIt’stimeforustotakeactionstohelpsavetheearth.Herearesomethingswecandoinourdailylife.First,weshouldsaveresources.Forexample,turnoffthetapwhenwedon’tusewater,andturnofflightswhenleavingaroom.Second,wecanusereusablethingslikewaterbottlesandbagstoreducewaste.Also,weshouldnotlitter.Throwingrubbishanywherewillpolluteourenvironment.Bydoingthesesimplethings,wecanhelpsaveourworld.Talkingroupsandpresentyourideasinthefront.TalkandsharePresentyourideasandevaluateyourperformance.It’severyone’sdutytohelpsavetheearth.Wecandomanythingsinourdailylife.Weshouldtakepublictransportationlikebusesorsubwaysinsteadofaskingparentstodriveuseverywhere.Thiscanreduceairpollution.Wecanalsosortourgarbageathome,puttingrecyclablethingslikepaperandplasticinonebin.Wecanplantsomeflowersathome,too.Let’senc