语法对点讲练五 名词性从句 名词性从句的功能相当于名词词组,能在句中充当主语、宾语、表语、同位语、介词宾语等。因此名词性从句又分为主语从句、宾语从句、表语从句和同位语从句。 引导词归类: 类别 功能 引导词 从属连词 只起连接作用,不充当句子成分 that, whether, if 连接代词 起连接作用,并充当主语、宾语、表语或定语 who, whom, whose, which, what, whatever, whichever, whoever 连接副词 起连接作用,并充当从句状语 when, where, how, why 一、主语从句 知识点讲解 1.主语从句的一般结构 ①主语从句一般放于主句谓语动词前,构成:主语从句+谓语动词+其他。 2.it作形式主语的主语从句 ②It+be/become(s)+形容词/名词/过去分词+主语从句。 It is clear that the whale is not a fish. ③It seems/appears等动词+that从句。 It happens that he can understand a little about the language. ④It remains to be+过去分词+主语从句。 ⑤It doesn't matter+how/whether从句。 It doesn't matter whether he is wrong or not. |