不定式在句子中的成分 讲义 高三英语一轮复习

黑色副词红色谓语动词蓝色代词黄色关系词绿色介词紫色名词灰色形容词粉色冠词橙色连词茶色数词非谓语动词——不定式不定式作主语=it是形式主语Togiveasmuchhelpaspossibleisourduty.Togiveasmuchhelpaspossibleisourduty.Togiveisourduty.Todo=n.=主Togiveisourduty.主系表asmuchhelpaspossible比较状语as...as...副词比较级（同级比较）Togiveasmuchhelpaspossibleisourduty.主状语系表Togiveisourduty.Todo=n.=主系表Todo=n.=ititisourdutytogive.(形式)主系表(真正的主语)

Itisourdutytogiveasmuchhelpaspossible(形式)主系表(真正的主语)比较状语Tolearnwellisourgoals.主系表Itisourgoalstolearnwell.(形式)主系表(真正的主语)状语Togoagreatuniversityismyhope.主系表Itismyhopetogoagreatuniversity.形式主系表(真正的主语)不定式作宾语Ican’taffordtobuyacar.Ican’taffordtobuyacar.tobuyacar=n.Ican’taffordtobuyacar.主谓宾Ipreparetoeatanapple.主谓宾I’mpreparingtogoonaholiday.主谓宾torefusehisofferisnotright.主系表=Itisnotrighttorefusehisoffer.Todemandisaperfectplan.主系表=Itisaperfectplantodemand.To/goprepareapartyforher.giveherapreparedparty不定式作形式宾语Youmayfinditnecessarytofinishtheworkaheadoftime.Youmayfinditnecessarytofinishtheworkaheadoftime.主谓形式宾宾补真正的宾状=Youmayfindtofinishtheworkaheadoftimenecessary.Youmayfindtofinishtheworkaheadoftimenecessary.主谓真正的宾状宾补不定式作表语=可以与主语互换位置Toseeistobelieve.Toseeistobelieve.Tosee=n.tobelieve=n.Toseeistobelieve.主系表

=Tobelieveistosee.Tobelieveistosee.主系表Hearingistofake.Hearing=n.tofake=n.Hearingistofake.主系表Tohearistofake.tofakeishearing.tofakeistohear.主系表Hiswishistobecomeateacher.主系表Tobecomeateacherishiswish.主系表Wearetomeetattheschoolgateatsix.Betodo表安排要做的事情Wearetomeetattheschoolgateatsix.主谓地点状语时间状语

≠Tomeetattheschoolgateatsixarewe.≠Tomeetattheschoolgateatsixarewe.表地点状语时间状语系主（错误）Sheasksmetowashthedishes.Sheasksmetowashthedishes.主谓宾宾补Irequirehimtofinishhishomework.Iremindhertogotoschoolat6o’clock.主谓宾宾补时间状Ihearhimsingasong.Ihearhim(to)singasong.主谓宾宾补

8.Hewasheardtosingasong.Hewasheardtosingasong.主谓主补Hehelpedme(to)cleantheroom.Hehelpedme(to)cleantheroom.主谓宾宾补Ilookather(to)dance.主谓宾宾补Shewaslookedtodance.主谓主补Isawhim(to)playbasketball. 主谓宾宾补Hewasseentoplaybasketball.主谓主补Hehelpmetoplanttr