Unit8Lesson22課件北師大版英語九年級全一冊

Unit8Lesson221、發(fā)現(xiàn)、歸納if條件狀語從句的語意功能。2、通過習(xí)題的操練，正確運(yùn)用主句和從句的時(shí)態(tài)。3、通過對災(zāi)難的應(yīng)急措施的表達(dá)，正確恰當(dāng)?shù)氖褂胕f條件狀語從句。4、培養(yǎng)學(xué)生在遇到突發(fā)緊急事件時(shí)，自救和幫助他人的意識。教學(xué)目標(biāo)Haveyouseenthispicture?What’sthis?Warm-upNASA

on

23rd,July

announced

the

discovery

of

Kepler-452b,

the

most

Earth-like

planet

everfound.

Located

1,400

light-years

from

our

planet,

NASA

called

it“Earth

2.0”,

because

it’s

thefirst

planet

discovered

in

the

habitable

zone

of

a

G

star

similar

to

our

sun.7月23日，美國國家航空航天局(簡稱為NASA)宣布發(fā)現(xiàn)開普勒-452b，是迄今為止與地球最為相近的行星。該行星距離地球1400光年，NASA將其命名為“地球2.0”，因?yàn)樗堑谝活w人類在宜居帶里與太陽相似的恒星附近發(fā)現(xiàn)的行星。1.與太陽相似的恒星被發(fā)現(xiàn)這顆系外行星編號Kepler452b，其直徑約為地球的1.6倍，與恒星之間的距離與日-地距離相近。恒星Kepler452距離地球大約430秒差距(約合1400光年)，位于天鵝座。天文學(xué)家稱，這是至今為止發(fā)現(xiàn)的最接近地球的“孿生星球”，跟地球的相似指數(shù)為0.98，并且有可能擁有大氣層和流動(dòng)水。

NASA說這個(gè)星球上可能有活火山，有存在生命的可能性，行星應(yīng)該有60億年歷史，地球?yàn)?5億年。Aninternationalteamofscientistssaidtheyhavediscoveredthefarthestgalaxyevermeasuredintheuniverse.ByusingapowerfulinstrumentcalledMOSFIREontheKeckItelescopeattheKeckObservatoryinHawaii,theteamthoughtthatthegalaxy,EGS-zs8-1,formedmorethan13billionyearsagoatatimewhentheuniversewasonlyfivepercentofitspresentage.科學(xué)家使用位于夏威夷的凱克天文臺的望遠(yuǎn)鏡發(fā)現(xiàn)了新星系，并將這個(gè)星系命名為EGS-zs8-1。它是迄今發(fā)現(xiàn)的最遙遠(yuǎn)星系，打破了此前的觀測紀(jì)錄。2.宇宙中最遙遠(yuǎn)星系被發(fā)現(xiàn)“…youmaynothavemorethantwelvemonthstolive.”Howwouldyoufeel?StephenHawking“…notexpecttosurvivethatlong….engaged…”paragraph2paragraph3universe…time…?…universe…begin?…blackholes…?blackholesparagraph4ABriefHistoryofTimeparagraph5scienceMisunderstandings…CarefulReading

Readthetextagainandanswerthefollowingquestions

Theywillprobablyfeelverysadandgiveuptheirdreamsandhopesforthefuture.

Insteadofgivingup,hewentonwithhisresearch,gothisPhDandmarriedthegirl.Hecontinuedhisexploration…andtraveled…togivelectures.

HebecamefamousforhavingmadenewdiscoveriesabouttheBigBangandblackholeswithRoger….---Inthebook,heexplainsbothwhatitmeanstobeascientistandhowscienceworks.Hetellsreadershowdiscoveriesaremadeandhow….

Peopleoftenthinkthatscienceisabout“true”factsthatneverchange.Scientists,ontheotherhand,knowthattheirjobisneverfinishedandthateventhebesttheorycanbeturnedouttobewrong.

(l4-p.4)—first,observe—then,explain-buildatheory—finally,testthetheory-ifitmatches-ifitcanpredict—useexperiments—useamodeltotestthetheory

TheonlytroubleisthatitgivesHawking,whoisBritish,anAmericanaccent.(ItistheAmericanaccentthatHawkingdoesn’tlikeaboutit.)GroupworkWorkingroupoffourandhaveadiscussion.Chooseoneofthethreetopicswhichyourgroupmembersareinterestedinandlistwhatyoushalldoornotdoifanearthquake/fire/floodhappenssothatwewillbeabletosurvive.Whatcan/willyoudoifthereis__?Showtime~SavepeoplearoundusArrangetohelpothersVideosarejustthebeginningEncouragemorepeopletotakeactionsWhichdiscoverydoyouthinkisthemostimportantaccordingtothetext?GroupWorkExample:A:IthinkX-raysarethemostimportantdiscovery.B:Why?A:BecausewithX-rays,doctorscanhelpfixbrokenbonesmoreeasily.…..HomeworkFinishEx1onP99.Ifyouli