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【英语】归纳名词性从句的连接词考点 名词性从句，即指性质相当于名词的从句，它包括主语从句、宾语从句、表语从句和同位语从句。从高考的考查的实际情况来看，名词性从句的连接词是高考的热点，也是考查的重点，这不仅体现在单项填空中，而且在完形和阅读中对长难句的分析也是理解文章语意重要法宝。因此这是每个高中学生必须掌握的语法项目。 一、引导名词性从句的连接词 引导名词性从句的连接词可分为三类： 连词：that ，whether, if ，as if ,as though等 以上在从句中均不充当任何成分 连接代词：what, whatever, who, whoever, whom, whose, which. whichever, whomever等 连接副词：when, where, how, why等
That-从句作主语通常用it作先行词，而将that-从句置于句末。如： It is quite clear that the whole project is doomed to failure. It's a pity that you should have to leave.
用it作形式主语的that-从句有以下四种不同的搭配关系，其重要句型归纳如下： a. It + be +形容词+ that-从句
It is necessary (important, natural, strange, etc.) that … It is necessary that… 有必要…… It is important that… 重要的是…… It is obvious that… 很明显…… b. It + be + -ed 分词+ that-从句
It is suggested (requested, proposed, desired, etc.) that… It is believed that… 人们相信…… It is known to all that… 从所周知…… It has been decided that… 已决定…… c. It + be +名词+ that-从句
It is a pity (a shame, no wonder, etc.) that… It is common knowledge that… ……是常识 It is a surprise that… 令人惊奇的是…… It is a fact that… 事实是…… d. It +不及物动词+ that-分句
It appears that… 似乎…… It happens that… 碰巧…… It occurred to me that… 我突然想起…… 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 2. 引导表语从句、同位语从句 3. whether从句作介词宾语 4. 直接与"or not"连用 5. 与不定式连用 Whether he will come is not clear. He asked me whether I would show him the way.Whether it will do us harm remains to be seen. 3. 连接代词 who(m), whose, which, what 等，均有各自的意义，在从句中作主语、宾语、定语等。如： That’s what she wanted to do . Who will join in the game doesn't matter. Tell me which one you like best. 4. 连接副词 when, where, why, how 等，也各自有自己的意义，在从句中作状语。如： The question is how we should carry out the plan. When she’ll be back depends much on the weather. Why he did it will remain a puzzle forever. 三、名词性从句的重要引导词 1. what 用于引导名词性从句是一个十分重要的引导词，它可引导主语从句、宾语从句和表语从句，但不用于引导同位语从句。它引导的名词性从句有两个意思是：一是表示“什么”，带有疑问意味；二是表示“…所…的”，相当于一个先行词后接一个关系代词。如： I don’t know what you want. I don’t know what you want is this. 2. what 引导名词性从句时可用作限定词，其后修饰名词。如： I gave him what books I had. He gave me what money he had about him. 注：what 后的名词可以是复数名词或不可数名词，但通常不能是单数可数名词。 What friends she has are out of the country. We gave him what (little) help we could. 3. whoever, whatever, whichever 等也可引导名词性从句，其意分别为“所…的一切事或东西”、“任何…的人”、““…的任可人或物”等。如： Whoever wants the book may have it. I’ll do whatever I can to help him. Buy whichever is the cheapest . 注意以下受汉语意思影响而弄错的句子： 任何人来都欢迎。 误：Who comes will be welcome. / Anyone comes will be welcome. 正：Whoever comes will be welcome. / Anyone who comes will be welcome. 另外，它们也可引导让步状语从句，其意为“无论…”、“不管…”，其意相当于 no matter who [what, which]。如： Whatever happens, you must be calm.(whatever = no matter what) He won't eat you, whoever he is. (whoever = no matter who) 4. why 与 because 的用法区别。两者均可引导表语从句，但前者强调结果，后者强调的原因。如： I had a cold. That’s why I didn't come. I didn’t come. That’s because I had a cold. 更多精彩的典例敬请看我们最新推出的《高考必备题型1000例》，在这本书中会让你实现弄懂一道题，攻克一类题的梦想，也会让你有意想不到的收获哦！ |
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