3、位于谓语动词之后或省略。能够充当主语的主要有名词(短语)、代词、数词、动名词(短语)、动词不定式(短语)和从句等。[例1] (2017·浙江11月高考语法填空)...andthebestpartoftheprocessisthatthere'senoughroomforimprovement,________meansyou'lljustkeepgettingbetterandbetter.[分析] which 空格处所填词引导非限制性定语从句并在从句中充当主语,且指代前面整个主句的内容,故应填关系代词which。[练1] (2018·浙江6月高考语法填空)Manywest