SectionⅢGrammar——主语和动词语境自主领悟先观察原句后自主感悟主语①AntarcticaisthecoldestplaceonEarth
②TheycalleditAntiArktikos,orAntarctica
③98%ofthesurfaceiscoveredpermanentlyintheicecap
④Tolearnaforeignlanguagewellisnoteasy
⑤Swimmingisagoodexercise
⑥Whetherhewillcomeisdoubtful
①~⑥句中的黑体部分在句中均作主语
由④⑤⑥句可知,不定式、动名词、从句作主语时谓语动词通常要用单数形式
动词⑦Ihopetoseeyousoon
⑧Hecameinandsatdown
⑨Thestudentwentpalewhenhesawtheteacher
⑩Icaneasilytellmyfather'sstep
⑪Wehadn'twalkedfarwhenwelostourway
由⑦~⑪可知,黑体部分均为动词,⑦⑧句中的黑体部分可直接作谓语,而⑨⑩⑪句中黑体部分不能单独作谓语
考点一主语主语是一句话的中心
主语通常由名词、the+形容词、代词、数词或者相当于名词的不定式、动名词或从句充当
词类例句名词Thenewsisexciting
the+形容词Thedisabledarewellcaredforinourcountry
代词Noneofusbelievedwhathesaid
数词Onethirdoftheworkhasbeenfinished
不定式Todecideistoact
(决定即行动
)动名词Watchingafilmisapleasure;makingoneishardwork
从句Whetherhewillcomeisunkn