Grammar_963259.pptVIP

1. 概念 在句子中起名词作用的句子叫名词性从句。名词性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、介词宾语等, 因此根据它在句中不同的语法功能,名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。其功能同名词一样。 Who will win the match is still unknown.  I want to know what he has told you. The fact is that we have lost the game. The news that we won the game is exciting. 2. 引导名词性从句的连接词可分为三类: 连接词/从属连词that, whether, if?不充当从句的任何成分 连接代词: what, whatever, who, whoever, whom, whose, which. 连接副词: when,?where,?how,?why 3. 不可省略的连词： 1) 介词后的连词 2)?引导主语从句和同位语从句的连词不可省略。 4. whether与if?均为“是否”的意思但在下列情况下, whether不能被if?取代 1) whether引导主语从句并在句首 Whether it is going to rain is still unknown. 2) 引导表语从句?The question is whether he is going to come. 3)?whether从句作介词宾语 4)?从句后有“or?not”? 在复合句中用作表语的从句是表语从句, 引导表语从句的关联词与引导主语从句的关联词大致一样, 表语从句位于连系动词am, is, are, was, were, seem, look, taste, remain后。其基本结构为:主语 +系动词 + that从句。 That’s what we should do. That’s why I want to see you. 用it作形式主语的结构 (1) It is＋名词＋从句 It is a fact that … 事实是…… It is an honor that ……非常荣幸 It is common knowledge that…是常识 (2) It is＋形容词＋从句 (多用 should) It is natural that… 很自然…… It is strange that… 奇怪的是…… (3) It is＋不及物动词＋从句 It seems that… 似乎…… It happened that… 碰巧…… It appears that… 似乎…… (4) It is＋过去分词＋从句 It is reported that… 据报道…… It has been proved that… 已证实…… It is said that… 据说…… It作形式主语和it引导强调句的比较 It 作形式主语代替主语从句, 主要是为了平衡句子结构, 主语从句的连接词有变化。而it引导的强调句则是对句子某一部分进行强调, 无论强调的是什么成分, 都可用连词that。被强调部分指人是也可用who/whom。例如: It is a pity that you didn’t go to see the film. It doesn’t interest me whether you succeed or not. It is in the morning that the murder took place. It is John that broke the window. 1. Can you make sure __ the gold ring? A. where Alice had put B. where had Alice out C. where Alice has put D. where has Alice put 2. _