精选优质文档-倾情为你奉上高考英语主语从句定义:用作主语的从句叫主语从句,它是名词性从句之一。主语从句的时态:不受主句的时态影响和限制。引导主语从句的连接词有: 从属连词: that, whether; 连接代词: who (whoever), whom, whose, what (whatever)和which (whichever);连接副词: when, where, how和why。连接词:1. 从属连词:that, whether 1)that引导主语从句只起引导作用,在主语从句中不充当任何成分,that本身无实际意义,但不能省略。 2)whether意为“是否”,放在句首句末皆可。由whether引导的名词从句做 主语,表语,介词宾语,同位语时!不可用if代替。 a.That price will go up is certain. b. Whether they would support us was a problem. 他们是否会支持我们还是一个问题。2. 连接代词wh