名词性从句是什么谁能给我讲解一下名词性从句啊
2个回答

一、引导名词性从句的连接词引导名词性从句的连接词可分为三类:连接词:that,whether,if 不充当从句的任何成分)连接代词:what,whatever,who,whoever,whom,whose,which.连接副词:when,where,how,why   不可省略的连词:1.介词后的连词2.引导主语从句和同位语从句的连词不可省略.That she was chosen made us very happy.We heard the news that our team had won.比较:whether与if 均为"是否"的意思.但在下列情况下,whether 不能被if 取代:1.whether引导主语从句并在句首2.引导表语从句 3.whether从句作介词宾语4.从句后有"or not" Whether he will come is not clear.大部分连接词引导的主语从句都可以置于句末,用 it充当形式主语.It is not important who will go.It is still unknown which team will win the match.