名词性从句 Noun clauses Grammar learning陈显佐名词性从句： 在句子中起名词作用的各种从句 , 充当名词能充当的成分 .名词性从句包括 : 主语从句 (subject clause)宾语从句 (object clause)表语从句 (predicative clause) 同位语从句 (appositive clause) 根据不同种类的句子来充当从句 , 可以划分以下三个类型 :类型一 : 由陈述句充当名词性从句 . I know him.宾语(that) he will come back tomorrow(that) he has gone to Beijing(that) he is travelling by bus The news is true.主 语That he will come back tomorrowThat he has gone to BeijingThat he is travelling by bus为了避免句子头重脚轻 , 常用 It 作形式主语 , 而把从句后置 .It is true that………The news is exciting. 表 语that he will come back tomorrowthat he has gone to Beijingthat he is travelling by bus总结 : 当由一个陈述句充当名词性从句时 :引导词用 that. 在宾语从句中可以省略 , 在其他情况下都不能省略 .由于本身就是陈述句 , 语序不需要调整 .类型二 : 由一个一般疑问句充当名词性从句I ask him a question.宾 语Will he come back tomorrow?whether/if he will come back tomorrow Has he gone to Beijing?whether/if he has gone to BeijingIs he travelling by bus?whether/if he is travelling by bus宾语从句The message is important. 主 语Will he come back tomorrow?Whether he will come back tomorrow Has he gone to Beijing?Whether he has gone to BeijingIs he travelling by bus?whether he is travelling by bus主语从句His question is surprising. 表 语Will he come back tomorrow?Whether he will come back tomorrow Has he gone to Beijing?whether he has gone to BeijingIs he travelling by bus?whether he is travelling by bus表语从句总结 : 当由一般疑问句充当名词性从句时引导词用 whether 或 if. if 只用于宾语从句 ,whether 可用于各种情况 .whether 可以和 or not 连用 , 而 if 就不行 .语序要进行调整 , 从一般疑问句语序调整到陈述句语序 .类别三 : 由特殊疑问句充当...
