Section Ⅷ Grammar单元语法项目(一)——名词性从句语法图解探究发现①It was predicted as early as the 1700s that English would one day be the global language ...②Experts say that just 15 minutes of extracurricular study a day can really accelerate foreign language learning.③What this means is that they make sure there is an adequate amount of input in English ...④... the chances that we will all have the opportunity to live in an Englishspeaking country are small.[我的发现](1)在主从复合句中起名词作用的句子叫名词性从句。名词性从句依据其句法作用，分别称为主语从句、宾语从句、表语从句和同位语从句。主语从句如句①③，宾语从句如句②，表语从句如句③，同位语从句如句④。(2)名词性从句用陈述语序。一、基本概念1．在句子中起名词作用的句子叫名词从句。名词从句的功能相当于名词词组，它在复合句中能担任主语、宾语、表语、同位语等，因此根据它在句中不同的语法功能，名词性从句可分为主语从句、宾语从句、表语从句和同位语从句。2．引导名词从句的连接词可分为三类：(1)从属连词：that, whether, if (不充当从句的任何成分)(2)连接代词：what, whatever, who, whoever, whom, whose, which(3)连接副词：when, where, how, why二、基本用法(一)主语从句在句中起主语作用的从句称为主语从句。连接主语从句的引导词有连接词 (that, whether, if)、连接代词和连接副词。1．that 引导的主语从句(1)that 置于句首的主语从句that 在主语从句中不作任何成分，也没有含义，只起连接从句的作用。That you are coming to London is the best news I have heard this long time.长久以来我听到的最好的消息就是你要来伦敦。(2)形式主语 it 替代主语从句常见的 it 替代主语从句的句式主要有如下几种：①It＋系动词＋形容词＋that 从句常用于这种结构的形容词有：necessary 必要的 right 正确的likely 可能的 unlikely 不可能的wrong 错误的 important 重要的certain 明确的 clear 清晰的obvious 明显的 strange 奇怪的natural 自然的It's certain that he will succeed.他肯定会成功的。[名师点津] 在 It is necessary/important/strange/natural＋that 从句结构...
