名词性从句九大高考热点分析名词性从句包括主语从句、宾语从句、表语从句和同位语从句。因为它是从句,因此具有句子的结构特点(即有一套主谓成份);同时又具有名词性特点,所以可以在复合句中作主语、宾语、表语或同位语。名词性从句是中学英语学习的重点,也是高考的主要考点之一。我们必须弄懂和掌握以下热点问题。一、连接词 what 与 that 的用法区别引导主、宾、表语从句时,what 要充当主语、宾语或表语等句子成分,that 不作任何成分,只在语法上起连接的作用。例如____ we can’t get seems better than ____ we have.A. What; what B. what; that C. That; that D. That; what解析:本句包含一个主语从句和一个宾语从句,且两个从句都缺乏宾语,可见两个引导词都必须充当成分,所以答案是 A。又如:____ caused the accident is still a complete mystery.A. What B. That C. How D. Where解析:该题答案是 A,what 在主语从句中作主语,即作谓语动词 caused 的执行者。在下面的例句中,that 不充当任何成份,只起语法连接作用(因为句子本身不缺成分): That the former Iraq president Saddam was captured has been proved.二、 连接词 whether 和 if 的用法区别通常,引导主语从句、表语从句和引导同位语从句时,要用连词 whether,不用 if;习惯上也只能说 whether or not,而不说 if …or not。例如:____ the 2000 Olympic Games will be held in Beijing is not known yet.A. Whenever B. If C. Whether D. That解析:试题中的从句位于句首,不难知道这是一个主语从句,所以答案是 C。但是在宾语从句中表达“是否”既可用 if 也可用 whether。三、 名词性从句的语序与别的从句一样,名词性从句必须用陈述语序。例如:No one can be sure ____ in a million years.A. what man will look like B. what will man look like C. man will look like what D. what look will man like解析:由于从句不能倒装,所以答案只能是 A。又如:You can’t imagine ____ when they received these nice Christmas presents.A. how they were excited B. how excited they wereC. how excited were they D. they were how excited 解析:答案是 B。同时还须注意,从句的引导...