第 11 讲 名词性从句1. It is uncertain ______ side effect the medicine will bring about, although about two thousand patients have taken it. (2010 浙江卷) A. that B. what C. how D. whether 【答案及解析】1. B 考查主语从句引导词。句意：这种药将会带来什么样的副作用还不确定，虽然已有大约两千人在吃这种药。it 为形式主语，______ side effect the medicine will bring about 为真正的主语。还原句子： the medicine will bring about______ side effect，side effect 前缺少一个修饰词，故用 what。2. — Is there any possibility ______ you could pick me up at the airport? — No problem. (2009 浙江卷) A. when B. that C. whether D. what【答案及解析】2. B 考查同位语从句的引导词。句意为：“你有可能到机场来接我吗？”“没问题。”you could pick me up at the airport 是 possibility 的具体内容，故是同位语。又因这个从句不缺任何句子成分，故用 that 引导。引导名词性从句的连接词 名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。因此，名词性从句分为主语从句、表语从句、宾语从句和同位从句。1．连接代词：who, whose, whom, what, which。有词义，在从句中充当成分，如主语、表语、宾语或定语等。2．连接副词：when, where, why, how。有词义，在从句中充当成分，作状语。3．连接词：that, whether, if, as if。that 无词义，在从句中不充当成分，有时可省略；if (whether), as if 虽有词义，但在从句中不充当成分。注意：名词性从句的语序———陈述语序他是怎么成功的仍然是个谜。How was he successful is still a puzzle. (×)How he was successful is still a puzzle. (√)主语从句的用法1．主语从句在复合句中作主语。如：Who_will_go is not important. 用心 爱心 专心12．用 it 作形式主语，主语从句放在句末。如：It doesn't matter so much whether_you_will_come_or_not. 3．that 引导主语从句时，不能省略。如： That_he_suddenly_fell_ill_last_week made us surprised. 表语从句的用法1．表语从句在复合句中作表语，位于系动词之后。如：The question was who_could_go_there. 2．引导表语从句的连接词 that ...
