名词性从句的功能相当于名词词组。在句中作主语;宾语;表语和同位语。因此,主语从句;宾语从句;表语从句和同位语从句通称为名词性从句。
第一节 主语从句
引导主语从句的连接词有:that, whether, who, which, what, when, where, how, why等。
That she was invited to the ball made her very happy.
Whether he will come to the ball has nothing to do with me.
Whoever wants to see the film may get a ticket free.