名词性从句 知识梳理-2022届高三英语一轮复习

名词性从句 句子分类 主语+谓语 主语+谓语+宾语 简单句 主语+系动词+表语 主语+谓语+宾语+宾补 主语+谓语+直接宾语+间接宾语 定语从句 复合句 名词性从句 复杂句 状语从句 并列句：由并列连词把两个或两个以上的简单句连在一起的句子叫并列句 从句的特点 1. 从句也要符合句子的基本结构 2. 从句只是做为句子某一成分出现的 3. 从句的关联词很关键, 通常来讲,它们是从句开始的标志 名词性从句 1. 定义：名词性从句在功能上相当于名词, 在复合句中能担任主语、宾语、表语、同位语等。 主语 His job is important. What he does is important. 表语 This is his job. This is what he does every day. 宾语 I don’t like his job. I don’t like what he does every day. 同位语 I don’t know about the man, Mr. White. I don’t know about the fact that he is a teacher. 2. 判断 谓语动词 宾语从句 主语从句 系动词 表语从句 When we shall hold the meeting depends on whether John can return tomorrow. The problem is when John will come back. 名词 同位语从句 We expressed our hope that we could visit the country again. 思考：定语从句与名词性从句的区别？ 练习：判断名词性从句 1. I don’t know who broke the window. 2. She is no longer what she used to be. 3. What they need is a good textbook. 4. She will give whoever needs help a warm welcome. 5. This is where our problem is. 6. It is certain that she will do well in her exam. 7. The foreigner expressed his hope that he was going to visit the Great Wall again. 8. We consider it necessary that he should improve his pronunciation. 3. 引导词 从属连词：that (无意义） Whether/if （是否） 不做成分 连接代词：what, whatever, who, whoever, whom, whose, which 作主语、宾语、表语 连接副词：when, where, why, how 作状语 4. 分类讲解 · 主语从句 （1） that引导的主语从句起连接作用，无词义，在从句中不作成分，不能省略。 e.g. That we are invited to a concert this evening is good news to us. （2） whether/if引导的主语从句起连接作用，表示“是否”，在从句中不作成分。 e.g. Whether he will go there or not is not clear. （注意：if引导主语从句不能放句首，即只能用于形式主语结构