【全套16份】2013届新课标高考英语精华知识点终极解密专题09名词性从句.docVIP

名词性从句 由一个主句和一个或一个以上的从句构成的句子叫复合句。名词性从句在复合句中起名词的作用，它包括主语从句、宾语从句、表语从句、同位语从句四大类，在句中分别用作主语、宾语、表语和同位语。 一、?引导名词性从句的关联词 A．that? 连词that本身没有意义，在从句中不担任任何句子成分，在宾语从句中有时可省略。? I hear (that) he has joined the football club. 我听说他已经加入了足球俱乐部。? That light travels in straight line is known to all. 众所周知，光是以直线传播的。? It so happens that I know the man. 碰巧我认识那个。? Is it certain that they will win 他们一定会赢吗 B．whether和if? 连词whether和if本身有意义（解释是否），在从句中不可省略。? 1．whether可以连接所有的名词性从句，而if只能引导宾语从句。? I didnt know whether he would attend the concert. 我并不知道他是否参加音乐会。（宾语从句，可用if代替whether）? The question is whether it s worth trying. 问题是值不值得试一试。（表语从句，不可用if代替whether）? Whether she comes or not makes no difference. 她来不来都没有关系。（主语从句，不可用if代替whether）? He must answer the question whether he agrees to it or not. 他必须回答他是否同意此事这样一个问题。（同位语从句，不可用if代替whether）? 2．whether引导的宾语从句可作介的宾语，而if则不能。? It all depends on whether they will support us. 这完全取决于他们是否支持我们。(不用if)? Ryan was worrying about whether he had hurt her feelings. 瑞恩担心是否伤害了她的感情。? 3．if既可引导语从句，也可引导宾语从句。如果用if会引起歧义，应避免使用if，而用whether。? Please let me know if you want to join us. 请告诉我你是否想加入我们。（if引导的从句可被看成是宾语从句，if表示是否）? Please let me know if you want to join us. 如果你想加入我们的话，请告诉我一声。（if引导的从句可被看成是条件状语从句，if表示如果）? Please let me know whether you want t join us. 请告诉我你是否想加入我们。（为避免引起歧义，可用whether表示是否） C．who, whom, whose, what, which? 连接代词who, whom, whose, what, which等在从句中既起连接作用，同时又担当主语、宾语、定语、表语等成分。? No one knows who he was waiting for. 没人知道他当时在等谁。? We are worrying about what we should do next. 我们正在为下一步该怎么办而烦恼。? Tell me whos house it is. 告诉我这是谁的家。? Let me know which train you will be arriving on. 告诉我你将乘哪列火车到达。? D．where, when, how, why? 连接副词where, when, how, why等在从句中既是连接词，又作状语。? I dont know where we are going to have the meeting.我不知道我们将在哪儿开会。? She always thinks of how shecan work well. 她总是在想怎样能把工作做好。? What I am anxious to know is when we can visit the museum. 我急于知道我们什么时候能参观博物馆。? 比较：? when引导的时间状语从句和名词性从句中的不同时态。? Please lt me know when you arrive. 你到的时候，请告诉我一声。（when