引导名词性从句的连接词 一、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 二、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
三、whether 与 if 均为"是否"的意思
但在下列情况下,只用 whether: 1
whether 引导主语从句并在句首 2
引导表语从句和同位语从句 3
whether 从句作介词宾语 It all depends on whether they will support us
后面直接跟动词不定时 He doesn’t know whether to stay or not
从句后有"or not" We didn’t know whether or not she was ready
引导让步状语从句,只能用 whether Whether you like it or not, you must do it well
主语从句学习指要 用来作主语的句子叫做主语从句
如: (1 )When he was born is unknown
他生于何时还不知道
(2 )What he did last night is being investigated
他昨天晚上干了些什么正在调查之中
引导主语从句的词有: 连词:that, whether, if(只限 it 作形式主语时用) 疑问