Unit4AstronomyGrammarSubjectclausesWhatmakestheearthunique

isthatlifeexistsonit.Howlifebeganontheearthisamystery.Whatmanyscientistsbelieveisthatwaterisfundamentaltothedevelopmentoflife.主語從句是在復合句中充當主語的從句。通常放在句首，也可用形式主語it代替，而從句則放在句末.

It'samystery

howlifebeganontheearth.It'suncertain

whetherlifewillcontinueontheearth.Findoutallthesubjectclausesinthetext.HowLifeBeganOnTheEarthPara.1:howtheearthformed1.Whattheearthwastobecome

wasuncertain.2.Itwasnotclear

whethertheshapewouldlastornot.

3.Whatismoreimportant

isthatwaterbegantoappearonitssurface.Para.2:howimportantwaterwasforlife4.Itwasnotobvious

thatwaterwastobefundamentaltothedevelopmentoflife.5.Whatmanyscientistsbelieveisthatwater

allowedtheearthtodissolveharmfulgases.Para.3&4:howplantsandanimalsdeveloped6.Whytheysuddenlydisappearedremains

amystery.7.Whetherlifewillcontinueontheearthwilldependonwhetherthisproblemcanbesolved.Readthepassagebelowandchoosethesuitableclauseforeachblank.

BeforeEinstein，1____wasthatlighttravelledthroughspaceinastraightline.Butafteryearsofresearch,Einsteinsuggested

thatlightwasbentasitpassedthesun.2___wassonew;itwassaid3____.4____wasdifficult.ItdidnotupsetEinstein5____.Hestucktohisopinionandwentonwithhisresearch.By1919,withtheastronomers’support,hehadsucceededinconvincingthemofhistheory.Hequicklybecameworld-famous.Nowitisgenerallyaccepted6___.A.howhecouldprovehisideastootherscientistsB.thatonlythreepeopleintheworldcouldunderstanditatthattimeC.thatEinsteinwastheleadingscientistofthe20thcenturyD.thatmanyofthescientistsdidnotaccepthisideasE.whatscientistsbelievedF.whathehadsuggestedEFBADCWhatscientistsbelievedwasthatlighttravelledthroughspaceinastraightline.Whathesuggested

wassonew.Itwassaidthatonly3peoplecouldunderstanditthen.Itdidn'tupsetEinstein

thatmanyscientistsdidn'taccepthisideas.Itisgenerallyaccepted

thatEinsteinwastheleadingscientistofthe20thcentury.what引導主語從句；

意為:什么/…的（東西/事情/地方/樣子…）；成分：作主/賓/表語等；語序：陳述。that

只引導主語從句；無詞義；不作成分；放在句首不省略。Fillintheblankswith“that”and“what”._____iswidelyacceptedisthattheuniversebeganwitha“BigBang._____theyreallyneedisnotmoneybutlove._____heisstillaliveisawonder._____Tomwasworriedaboutseemedobvioustousall.

Itisafact_____thetemperatureoftheearthisgoingup.

WhatthatWhatThatWhatGroupwork:Itisafactthat...

Itisclear/necessarythat...Whatweshoulddois... Whatismoreimportantis......remainsamystery.whichwhatwhoTranslatethesentencesintoEnglishusingnounclausesasthesubject:IcelebratedtheChineseSpringFestivalwithmyChinesefriendLiHuaonFebruary19,2015.______________________________(人們什么時候慶祝春節(jié))dependsonthelunarcalendar,usuallybetweenlateJanuaryandFebruary.___________________________(我所吃驚的)istheoriginoftheChineseSpringFestival.Itissaid___________________________(一個叫“年”的怪獸年底總是來吃人).Itbecameatradition___________________________________(人們貼紅紙把怪獸嚇跑).AttheSpringFestival,peopleeatdumplings,fishandmeat._______________________(最重要的)isthatfamiliescancelebratetheLunarNewYeartogether,enjoyinglife.But_________________________________(年青人如何看待中國的傳統(tǒng)節(jié)日)isdifferentfromtheirparents.Itisobvious________________________________________________(現(xiàn)在西方節(jié)日越來越受年青人的歡迎).___________________________________(哪個節(jié)日最重要)isstillaquestionforthem.Itisuncertain_______________________________________(西方的節(jié)日是否會取代中國傳統(tǒng)節(jié)日).WhenpeoplecelebratetheSpringFestival

dependsonthelunarcalendar,usuallybetweenlateJan.andFeb..WhatsurprisedmemostistheoriginoftheChineseSpringFestival.Itissaidthatamonsternamed“Nian”wouldeatpeopleattheendoftheyear.Itbecameatraditionthatpeopleputredpapertofrightenthemonsteraway.Whatisthemostimportant

isthatfamiliescancelebratetheLunarNewYeartogether,enjoyinglife.ButhowyoungpeopleregardtraditionalChinesefestivalsisdifferentfromtheirparents.ItisobviousthatwesternfestivalsaremoreandmorepopularamongChineseyoungpeoplenowadays.Whichfestivalisthemostimportantoneisstillaquestionforthem.ItisuncertainwhetherwesternfestivalswillreplaceChinesetraditionalones.Assignme