名词性从句(这个应该不考吧)名词性从句是由if, whether, that 和各种疑问词充当连接词所引导的从句,其功同名词一样。一主语从句1. 主语从句的语序主语从句要求使用陈述句语序,而非一般疑问句语序。如:What surprised me most was that the little girl could play the violin so well. 使我感到惊讶的是这个小女孩的小提琴拉得太好了。How he was successful is still a puzzle. 他是如何成功的仍然是个谜。2. 连接词的选用(1)that和what的选用that和what都可引导主语从句。what除起连接作用外,还在名词性从句中充当某些成分,可作从句的主语、宾语或表语。而that在名词性从句中不充当任何成分,无词义,只起连接词作用。如:What he wants is a book. 他想要的是一本书。That light travels in straight lines is known to all. 众所周知,光线沿直线运行。(2