名词性从句主语+be+表语 主语+do+宾语 名 词 名 词 名词性从句 名词性从句在功能上相当于名词主语 His job is important.What he does is important.表语This is his job.This is what he does every day. 宾语 I dont like his job.I dont like what he does every day.同位语 I dont know about the man, Mr. White.I dont know about the fact that he is a teacher.什么叫名词性从句？在句子中起在句子中起名词名词作用的句子叫名词从作用的句子叫名词从句句 (Noun ClausesNoun Clauses）名词从句的功能相当于名词词组名词从句的功能相当于名词词组, , 它它在复合句中能担任在复合句中能担任主语、宾语、表语主语、宾语、表语、同位语、同位语等等因此根据它在句中不同的语法功能，因此根据它在句中不同的语法功能，名词从句又可分别称为名词从句又可分别称为主语从句
