名词性从句一、 知识储备种类作用常用关联词例句主语从句在复合句中做主语，相当于名词，一般置谓语之前，也可用it作形式主语，主语从句放主句之后that, whether, if, as if, as though, who, whose, which, how, when, where, why, what, whatever, whoever, whereverWhether he will come or not doesnt matter much.Whoever comes here will be welcome.表语从句在复合句中做表语，相当于名词，位于系动词之后It looks as if it is going to snow.宾语从句在复合句中做宾语，相当于名词He asked me which team could win the game.同位语从句放在名词之后(news, problem, idea, suggestion, advice, thought, hope, fact等) 表
