SubjectclausesU2Outofthisworldlead-inWhatfunctionsasasubjectinfollowingsentences?1.Theamazingwork

thesepeopledocanprovideeducationandinspirationforthenextgeneration.2.Exploringspacehelpsaddressfundamentalquestionsaboutourplaceintheuniverseandthehistoryofoursolarsystem.3.Toaskforpermissionbeforetakingpicturesofthelocalpeopleisvitallynecessary.4.Whetherlifeonotherplanetsdoesexsityettobeproved.subjectclausesubjectclausesⅠ.定義在主從復(fù)合句中，從當(dāng)主語的從句叫主語從句Howtheearthcameintoexsitenceremiansamysterytous.Ⅱ.引導(dǎo)主語從句的三類連接詞及其句法功能1.連接詞：that,whether（1）that在從句中不充當(dāng)句子成分，也無意義，但不能省略Thatsmokingdoesharmtohealthisknowntoeveryone.Thathewillsucceediscertain.（2）whether在從句中不充當(dāng)句子成分，意為“是否”Whetherwewillattendthemeetinghasnotbeendecidedyet.Whetherlifeexistsonotherplanetsisnotclear.Ⅱ.引導(dǎo)主語從句的三類連接詞及其句法功能2.連接代詞：who,what,which,whom,whose,whoever,whatever,whichever(1)Whowillbringupthisboyhasnotbeendecidedyet.(2)Whoeversolvestheproblemcanreceivetheaward.(3)Whateveryoudoshoulddonoharmtoothers.連接代詞通常在主語從句中充當(dāng)成分Ⅱ.引導(dǎo)主語從句的三類連接詞及其句法功能3.連接副詞：

when,why,where,how在從句中作狀語(1)Wherewelivedoesn’tmatter.(2)WhyCarldidn’tkeephiswordwasobvious.(3)Whenwewillsetoffisnotknown.Ⅲ.用it作形式主語常用句型1.itbe+adj+that....

Itisclearthatthegirltoldalie.2.itbe+名詞（名詞詞組）+that...Itisapitythatyourparentsdidn’tpermityoutogohiking.3.itbe+done+that

ItisreportedthataviolentearthquakehappendinJapan.clear,obvious,true,possible,likely,fortunate...apity,nowonder,agoodidea,afact,goodnews...believed,arranged,announced,assumed表示命令，建議，請(qǐng)求，堅(jiān)持的從句中要用虛擬語氣itisordered/commanded/suggested/advised/required/requested/insisted/+thatsb(should)doItissuggestedthatpeopleshouldnotgoonapicnicbecausetherewillbeastromtoday.Ⅳ.注意事項(xiàng)1.主語從句總是用

語序Whetherhewillbeintimeforthemeetingisdoubtful.2.時(shí)態(tài)和謂語動(dòng)詞Whatsurprisedmemostwasthatthemanwasamilionaire.3.what引導(dǎo)的主語從句中，表語是名詞時(shí)，謂語動(dòng)詞單復(fù)數(shù)取決于表語的單復(fù)數(shù)。Whatastronautsneedinspaceshipisoxygen.Whatthechildrenstarveforintheareaarebooks.陳述保持一致Applyingtherules

B11.Thespacemissionwentsowellwasbeyondourexpections.3.Itwasnotclearthathwlonghewillstayonthespacestation.2.Whethertheyareabletogrowmorevegetablesinspacedependonhowmuchtimeittakes.Thatthedependsis4.WhatthelunarprobedidnotlandwasaworryforthepeoplebackontheEarth.5.ThatmakestheChinesepeoplehappyisthatChinahassuccessfullylaunchedaspacerocket.ThatWhatPractice用適當(dāng)?shù)倪B接詞填空1.Itisapity

wemightmisstheopeningscene.2.Theylosttheirwayintheforestand

mademattersworsewas

thenightbegantofall.3.Thereismodoubt,inmyopinion,that

mattersisnotquantity,butthequalityofproducts.4.Itdoesn’tinterestme

yousucceedornot.5.

theywillhavethesportsmeetingisstillaquestion,fortheyhavesomanythingstodo.6.

wearepermittedtousethelibraryisnotknown.7.

theauthorreferredtoinhisarticlewasunknown