高中英语名词性从句讲解

名词性从句 名词性从句包括四种从句即主语从句、表语从句、宾语从句和同位词从句。 引导名词性从句的关联词有以下三类： 从属连词：that, whether, if, as if (用于表语从句) 连接代词：who, what, which, whom, whose，whatever, who, whoever,等 连接副词：when, where, why, how以及由how组成的词组how many, how long, how far等 I. 主语从句 主语从句: 通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。 it作形式主语的几个主要句型 1.It + be+名词词组(no wonder, an honor, a good thing, a pity, no surprise, etc.) + that从句 It’s a pity that we can’t go . 2.It +be +形容词(obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.)+ that从句 It is certain that she will do well in her exam. 3.It + be+ 过去分词(said, reported, thought, expected, decided, announced, etc.)+ that从句 It is said that Mr. Green has arrived in Beijing. 4. It +不及物动词(seem, happen等) +that从句 It seemed that Alice is not coming to the party at all. 5. It doesn’t matter (makes no difference, etc.)+连接代词或连接副词引起的主语从句。 It doesn’t matter whether she will come or not. 她是否来这