名词性从句--主语从句

名词性从句 一 主语从句 主语从句 把两句话合并成一句话1 Tomwillwinthetennisgame Itseemsimpossible ThatTomwillwinthetennisgameseemspossible 主语 连系动词 表语 ThatTomwillwinthetennisgameseemspossible 连系动词 表语 主语从句 主句 主语从句 在主句中担当主语的是一个从句 这个从句就叫主语从句 引导词 从属连词 that whether关系代词 who whom whatwhich whose关系副词 when where why 由that引导主语从句 例句 把两句话合并成一句话Lighttravelsinstraightlines Itisknowntoall Thatlighttravelsinstraightlinesisknowntoall 2 Weshouldwashourhandsbeforemeals Itisnecessary Thatweshouldwashourhandsbeforemealsisnecessary 由that引导主语从句 把两句话合并成一句话3 Everystudentshouldhaveastudyplan Itisnecessary Thateverystudentshouldhaveastudyplanisnecessary 4 Studentssayhellototheirteachers Itispolite Thatstudentssayhellototheirteachers ispolite 由that引导主语从句 把两句话合并成一句话5 Yourmotherdidn tattendthepartyyesterday Itisapity Thatyourmotherdidn tattendthepartyyesterdayisapity 6 Tomstolehisclassmate smoney Itisafact ThatTomstolehisclassmate smoneyisafact 由that引导主语从句 把两句话合并成一句话7 Therewillberainytomorrow Itispossible Thattherewillberainytomorrowispossible 8 Teenagerssmoke Itiswrong Thatteenagerssmokeiswrong 由whether 是否 引导的主语从句 Willhegoabroad Itisnotknown Whetherhewillgoabroadisnotknown 2 Willitraintomorrow Itisnotknown Whetheritwillraintomorrowisnotknown 3 Isheapoliceman Itisnotclear Whetherheisapolicemanisnotclear 4 Isthefilmstarhappy Itisnotclear Whetherthefilmstarishappyisnotclear 由whether 是否 引导的主语从句 在主语从句中只能用whether 是否 此意义时不能用if替换 我是大王我说了算 形式主语It代替that主语从句 ThatwestudyEnglishwellisnecessary ItisnecessarythatwestudyEnglishwell 我是傀儡 形式主语 真正主语 第一种 形式主语It代替that主语从句 Itis 名词 that从句Itisapitythat Itisashamethat Itisafactthat Itisanhonorthat 等等 形式主语It代替that主语从句 1 ThatJohnwonagoldmedalisafact ItisafactthatJohnwonagoldmedal 2 ThatImissedthebeginningofthefilmisapity ItisapitythatImissedthebeginningofthefilm 3 Thatwewillgotravellingisgoodnews Itisgoodnewsthatwewillgotravelling 4 Thatmymotherlosthernewwalletisapity Itisapitythatmymotherlosthernewwallet 5 ThatMarrymarriedablindmanisapity ItisapitythatMarrymarriedablindman 6 ThatMarrytoldalietoherhead teacherisasurprise ItisasurprisethatMarrytoldalietoherhead teacher 第二种 形式主语It代替that主语从句 Itisimportantthat Itisnecessarythat Itispolitethat Itiswrongthat 等等 Itis 形容词 that 把两句话合并成一句话 例句ThatlighttravelsinstraightlinesisrightItisrightthatlighttravelsinstraightlines Thathegotagoldmedalisreal Itisrealthathegotagoldmedal 把下列句子用it做形式主语 ThatTomwillwinthegameispossible ItispossiblethatTomwillwinthegame 2 Thatweshouldwashourhandsbeforemealsisnecessary Itisnecessarythatweshouldwashourhandsbeforemeals 3 Thatwemustcompletethisworkbefore5o clcockisnecessary Itisnecessarythatwemustcompletethisworkbefore5o clcok 第三种 形式主语It代替that主语从句 It 不及物动词 that 1 ThatImetmyGeographyteacherinthestreethappened IthappenedthatImetmyGeographyteacherinthestreet 2 ThatIpickedaredwalletonthewaytoschoolhappened IthappenedthatIpickedaredwalletonthewaytoschool 3 Thatthemanagerandthebosswenttravellinghappened Ithappenedthatthemanagerandthebosswenttravelling 第四种 形式主语It代替that主语从句 It be 过去分词 that Itissaidthat 据说 Itisreportedthat据报道 Itisknowntoallthat 众所周知 Itisbelievedthat 人们相信 Itisthoughtthat 人们认为 It be 过去分词 that ThathisfatherhasgonetoTianjinissaid ItissaidthathisfatherhasgonetoTianjin 2 Thattenpersonsdiedintheaccidentisreported Itisreportedthattenpersonsdiedintheaccident 3 Thattheearthwasnotroundwasbelievedinancienttimes Itwasbelievedinancienttimesthattheearthwasnotround It be 过去分词 that 4 ThatitwillraintomorrowisbelievedItisbelievedthatitwillraintomorrow 5 Thatthewaiterworkshardisthought Itisthoughtthatthewaiterworkshard 6 ThattheAmericanpresidentwillvisitChinaisreported ItisreportedthattheAmericanPresidentwillvisitChina that省略问题 Thatitwillraintomorrowisbelievedthat放句首不能省略Itisbelievedthatitwillraintomorrow that放在句尾不省略 但偶尔在口语中有省略的 关系代词 whatwhichwhowhom等引导主语从句 例句Whomdidtheboyhelp Sheisanoldwoman Whomtheboyhelpedisanoldwoman Wheredoeshelive ItisBeijing WherehelivesisBeijing 关系代词 whatwhichwhowhom等引导主语从句 把两句话合并成一句话1 Whatdotheirparentsneed Itismoreexperience Whattheirparentsneedismoreexperience 2 WhichdoctorswillbesenttoWenchuan Ithasnotbeendecided WhichdoctorswillbesenttoWenchuanhasn tbeendecided 3 Whatcolordoesthegirllike Itispink Whatcolorthegirllikesispink 关系代词 whatwhichwhowhom等引导主语从句 把两句话合并成一句话4 Whatdidhelose Itisabrownhandbag Whathelostisabrownhandbag 5 WhichteacherwillteachthestudentsGeography Ithasn tbeendecided WhichteacherwillteachthestudentsGeographyhasn tbeendecided 关系副词 wherewhywhen引导主语从句 Wheredidhego Ithasn tbeenknown Wherehewenthasn tbeenknown 2 Whyishelateforschool Itisnotclear Whyheislateforschoolisnotclear 3 Whendoestheplanetakeoff Itisclear Whentheplanetakesoffisclear 4 Wheredoesheoftengoforawalk Itisinthepark Whereheoftengoesforawalkisinthepark 关系副词 wherewhywhen等引导主语从句 1 Whyisthebabycrying Ithasnotbeenkno