高中英语2025届高考语法复习名词性从句知识讲解练习

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1、高考英语语法复习名词性从句讲解练习名词性从句是指在复合句中起名词作用的句子，功能相当于名词词组。名词性从句在复合句中能作主语、宾语、表语、同位语等，根据在句中的语法功能可分为主语从句、宾语从句、表语从句和同位语从句。一、主语从句【定义】在复合句中，作主语的句子称为主语从句。【常见的连接词】（连接词在句中不能省略）that, whether, who, what, whatever, whoever, where, when, why, how等。【用法】 连接词 that 引导That we should learn English well is very important.主语从句中 w

2、e should learn English well句子完整，不缺成分，用that引导，that 不能省连接词whether，if 引导whether 引导的主语从句可放句首，也可放句中，表 “是否”if 引导的主语从句只能引导动词后的宾语Whether I will go or not depend on the weather.It remains to be seen whether / if they can finish the task in time.2.连接代词what, who, which, whose, whatever, whichever，whoever等引导Wha

3、t matters most is your attitude.3.连接副词when，where，why，how等引导How he made it is still unknown.4.it作形式主语为了避免句子头重脚轻，通常把形式主语it放在句首，真正的主语放在句子后面。常见句型：(1) It is + n.+ that + 句子It is +（a pity / a shame / a fact ）+ that .(2) It is + adj.+ that + 句子It is +（true / clear / important ）+ that .(3) It is + 过去分词 + th

4、at + 句子It is+ said / announced / expected / believed / hoped + that .(4) It seems /appears / happens / turned out that + 句子(5) It hit sb./occurred to sb.that + 句子 二、宾语从句【定义】在复合句中，作宾语的句子称为宾语从句。【常见的连接词】that, whether, if, who, whose, which, when, how, what, why等。【用法】that引导的宾语从句当一个动词后有两个或两个以上宾语从句时，第一个th

5、at可省略，第二个和第二个以上的that不可省略。I think (that ) he is intelligent and that he is willing to help others.2.whether / if 引导的宾语从句Nobody knows whether / if she will go abroad.只能用whether，不能用if的情况(1) 介词+ whetherIt depends on whether it will rain tomorrow.(2) whether .or not .I dont know whether I should stay or

6、not.(3) whether to doWhether to go or stay is still a question.3.宾语从句的三种情况：动宾、介宾、形宾。(1) 动词 + 宾从I have found that English is very important .(2)介词 + 宾从It depends on whether itll rain tomorrow .(3) 形容词 + 宾从Im glad that you like English .常见形容词：sure / surprised / happy / pleased / afraid / certain / sorry等4.it 作形式宾语时，that 不可省略。I think it important that we should l