名词从句

第九讲名词性从句

考点一主语从句

1．引导主语从句的连接词：连接词that，whether；连接代词what，who，whose，whatever，whichever，whoever 等；连接副词 when，where，why，how。

①(2014·陕西卷)When the delayed flight will take off depends much on the weather.

延迟的飞机何时起飞在很大程度上取决于天气。

②That they were in truth sisters was clear from the facial similarity between them.

从她们的面貌相似度就能清楚地看出是亲姐妹。

③(2013·重庆卷)What struck me most in the movie was the father’s deep love for his son.

影片中最打动我的是父亲对他儿子深厚的爱。

易混辨析

whether与if引导主语从句的区别：

主语从句位于主句谓语动词前，表“是否”，只能用whether，不可用if引导；若用it 作形式主语，则if与whether可互换。

④Whether we can have clean drinking water lies in what effective measures will be taken by the government about water pollution.

我们能否有干净的饮用水依赖于政府将采取什么样的有效措施处理水污染问题。

⑤It remains to be seen whether or not this idea can be put into practice.

这一想法能否付诸实践还有待观察。

2．主语从句一般放在句首，但常用it作形式主语，而将主语从句移到句子的末尾。常见的句型：

(1)It＋be＋形容词(necessary/likely/important/certain等)＋that从句

(2)It＋be＋名词(短语)(a pity/a shame/no wonder等)＋that从句

(3)It＋be＋过去分词(said/told/reported/decided等)＋that从句

(4)It＋不及物动词(seem，appear，happen，matter等)＋that从句

①It’s no surprise that our team has won the game.

我们队获胜一点都不令人吃惊。

②It is decided that the meeting has been put off till next Monday.

会议被推迟到下周一召开已经定下来了。

考点二表语从句

1．引导表语从句的连接词：连接词that，whether；连接代词what，who，whose，whatever，whichever，whoever 等；连接副词when，where，why，how，从句用陈述语序。

①Jerry did not regret giving the comment but felt that he could have expressed it differently. 杰里不后悔给出评论，但是觉得自己本来可以用不同的方法来表达的。

②I’d like to start my own busine ss —that’s what I’d do if I had the money.我愿意自己创业——那就是如果我有钱将会做的事情。

2．as if/as though 引导的表语从句

as if/as though 引导的表语从句常跟在be 动词， seem ，look ，taste ，sound ，feel ，appear 等动词之后。

The thick smog covered the whole city.It was as if a great black blanket had been thrown over it.

厚重的烟雾覆盖着整个城市。好像把一个厚厚的黑色的毯子扔到它的上面。

3．because ，why 引导的表语从句

because ，why 也可引导表语从句，但because 引导的表语从句，主语不能是reason 或cause(该结构常用that 引导)。常用于以下句型：

⎩⎪⎨⎪⎧

This/That is why...这/那是……的原因。This/That is because...这/那是因为…… ①(2013·安徽卷)From space ，the earth looks blue.This is because about seventy-one percent of its surface is covered by water.从太空中看，地球是蓝色的。这是因为地球表面大约71%被水所覆盖。

②The reason why he didn’t pass the exam was that he was too careless.

他没有通过考试的原因是他太粗心了。

考点三 宾语从句

1．引导宾语从句的连接词：连接词 that ，whether ，if ；连接代词what ，who ，whose ，whatever ，whichever ，whoever 等；连接副词when ，where ，why ，how ，从句用陈述语序。

①We promise whoever attends the party a chance to have a photo taken with the movie star.我们许诺，任何参加这个聚会的人都有跟那个电影明星合影的机会。

②(2015·北京卷)I truly believe that beauty comes from within.我确信美来自内心。

2．it 作形式宾语的宾语从句

(1)一些动词后的宾语从句有宾语补足语时，则需要用it 作形式宾语，而将that 引导的宾语从句后置。常见的这类动词有：find ，feel ，think ，consider ，believe ，guess ，suppose ，make 等。

He has made it clear that the meeting will not be postponed.他清楚地表明会议不会被推迟。

(2)动词hate ，like ，dislike ，appreciate ，enjoy 等表示“喜欢”“厌恶”的动词以及一些动词短语see to ，depend on ，rely on 等常用it 作形式宾语，而将宾语从句后置。

I shall see to it that he is taken good care of when you are absent.你不在的时候，我负责把