第十三屆全國中小學信息技術創新與實踐活動—網絡教研比賽

主語從句Unit4Astronomy:thescienceofthestars人教新課標必修三閱讀課文，尋找主語從句Whatpeoplebelieveisthattheuniversebeganwitha“BigBang”.2.Whatdidtheearthfirstlooklike?Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsago.1.Howdidtheearthbegin?Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.4.Whydiddinosaursdisappearfromtheearth?Whytheydisappearedstillremainsamystery

.3.Whatismoreimportantfortheappearanceoflife?閱讀課文，尋找主語從句主語從句歸納總結主語從句的定義：在復合句式中充當主語的句子就叫做主語從句。特別強調主語從句不能孤立存在，必須是在復合句式中。引導從句必須有相應的連接詞。that,whether引導主語從句的連接詞從屬連詞連接代詞連接副詞what,who,whichwhen,where,why,how不做，起連接主語從句作用有，表是否Whether不做，起連接主語從句作用無that是否做成分有無意義連接詞that和whether的用法1.______theearthtravelsroundthesunisawell-knownfact.

2.Itisuncertain________theartistcandoitornot.例句ThatwhetherThat，whether的例句1)_______hewantstotellusisnotclear.

2)______isneededforthetripiscarefulpreparation

3)______willwinthematchisstillunknown.

4)______kindoffoodisthebestisuncertain.

WhichWhatWhoWhat連接代詞

what,who,whichWhat,who,which的用法)_______hewaslateforclassisnotclear._______hecanfindanewjobisaproblem123______Icankeepfitandhealthyisasecret.4WhereWhenWhyHowWhere,when,how,why的用法連接副詞

where,when,why,how_______theywillcomehasn’tbeenmadepubic.______hewaslateforclassisnotclear.主語從句的重點難點1.“if”不能引導主語從句，應用“whether”________we’llgocampingdependsontheweather.2.主語從句的“that”不能省略。

_____youdon’tlikehimisnoneofmybusiness.4.注意“what”引導主語從句時謂語動詞的形式Whatyouleft____onlyseveraloldbooks.Whatyousaid____ofgreatimportance.

3.主語從句中用陳述語序

____________________________isnotknown.whetherThatareisWheretheyoungmanhasgone

考點1

考點2

考點3

考點4It作形式主語的常用句型真正的主語形式主語ItwasdifficultthatIgainedsuchachievement.Itisnotclearhowgoldwasfoundthere.Itishardtounderstandwhythereisgravity.Itisshamethatyouhavetoleavesosoon.Itisbelievedthatthecouplehaveleftthecountry.

為了避免主語顯得過長，可以用it作為句子的主語，把主語從句移到句子的末尾It+be+名詞＋that從句It作形式主語的常用句型Itisamysterytomehowitallhappened.Itiscommonknowledgethatthewhaleisnotafish.ItisnosurprisethatBobshouldhavewonthegame.翻譯下列句子：

Itisapitythat…遺憾的是….Itisasurprisethat….令人驚奇的是…Itisafactthat……事實是……It+be+形容詞＋that從句Itisessentialthatheshouldbeherebytheweekend.Itisobviousthatwecannotgoonlikethis.Itisnecessarythatyou（should）masterthecomputer.翻譯下列句子：

Itisnecessarythat…有必要…Itisimportantthat….重要的是…Itisclearthat……很明顯……It作形式主語的常用句型用it作形式主語的主語從句It+be+過去分詞＋that從句Itisbelievedthatthecouplehaveleftthecountry.Itisreportedthattheprojectwillbecompleted.Itwassaidthathehadgoneabroadtostudymedicine.翻譯下列句子：

Itisbelievedthat…人們相信…Itissaidthat……據說…Itisknowntous/allthat….眾所周知…It+不及物動詞＋that從句ItoccurredtomethatIhadn’tfinishedmyhomework.IthappenedthatIsawhimyesterday.Itmakesnodifferencewhetherhewillattendthemeetingornot.翻譯下列句子：

Itappearsthat…似乎…Ithappensthat….碰巧…Itoccurredtomethat……我突然想起……用it作形式主語的主語從句選用主語從句的連接詞填空______theearthtravelsroundthesunisawell-knownfact1Itisuncertain________theartistcandoitornot.2______willacttheleadintheplayhasnotbeendecidedyet.3______theyoungmanhasgoneisnotknown.4_______heisworriedaboutishishealth5ThatwhetherWhoWhereWhat主語從句的強化訓練思考與辨析1.Theproblemwaswhocoulddothework.2.Whowillgomakesnodifference.3.DoyouknowwhomJohnAdamswasspeakingto.4.WilltellmehowIcankeepfitandhealthy?5.Histroubleiswherehecanfindanewjob.6.Whatis