内容正文:
06名词性从句
从句是相对于主句而言的,即它是从属于某一个主句,而不能单独作一个句子。在英语中,主要有三大从句,即名词性从句(包括主语从句,宾语从句,表语从句,同位语从句)、形容词性从句(即定语从句)、副词性从句(即状语从句,包括时间、条件、结果、目的、原因、让步、地点、方式等)。
在句子中起名词作用的句子叫名词从句(Noun Clauses)。名词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。
一、名词性从句的分类
名词性从句,包括四种从句,即主语从句、宾语从句、表语从句、同位语从句。因为主语、宾语、表语、同位语这四种成分均可以由名词构成,所以这四种从句在主句中都充当了名词的作用,故将这四种从句统称为名词性从句。如:
1.That she will help me made us happy.(主语从句)
2.I can understand what he said.(宾语从句)
3.This is where I was born.(表语从句)
4.The fact that a heavy earthquake happened made me crazy.(同位语从句)
二、名词性从句的连接词分类
1.that(无含义,不充当成分)
2.whether,if(有“是否”的含义,但不充当成分)
3.连接代词:what, whatever, who, whoever, whom, whomever, whose, which, whichever.(在从句中做主语、宾语、表语和定语)连接副词:when, whenever, where, wherever, how, however, why (在从句中做状语)
4. as if, as though, because(不充当成分,在名词性从句中只引导表语从句)
三、连接词that在名词性从句中可以省略的三种情况
1.it 做形式主语,that引导主语从句时
It is said (that) he has been studying abroad.据说他一直在国外学习。
2.动词宾语从句中
I think(that) you have much to improve in English.我认为你的英语需要提高的有很多。
3.形容词宾语从句中
I am afraid (that) I will be late.恐怕我要迟到了。
四、同位语从句和定语从句的区别
that作为关系代词,可以引导定语从句,充当句子成分,在从句中作宾语时可以省略;that引导同位语从句时,起连词的作用,没有实际意义,不充当句子成分,一般不能省略。
试比较下面两个例句:
(1)I had no idea that you were here.我不知道你在这里。
that无含义,that you were here 指的就是idea,所以是同位语从句,不能省略that
(2)Have you got the idea(that)this book gives you?这本书给了你想法吗?
that指的是the idea,that引导定语从句,作宾语,可以省略
名词性从句如何考查
1.考查名词性从句的引导词,通常都是在无提示型的试题中,即试题只给出空格而不给提示词,让考生填入恰当的引导词。
例1·语法填空:I didn’t understand why this would happen and my credit card had already been charged for the reservation. 此题考查why引导的宾语从句。
例2·完形填空:But every day, we would sit by the lake, looking at the house and dreaming of what it would be like to live there. 此题考查what引导的宾语从句。
例3·短文改错:After looking at the toy for some time, he turned around and found where his parents were missing. 此句中,正确答案为:去掉where,或把where改为that。(that) his parents were missing是一个宾语从句。
2.考查名词性从句的时态、语态,通常出现在语法填空和短文改错这两大题型中。
例4·短文改错:Do you want to know why we move last week?此句中,正确答案为:把move改为moved。why we moved last week是一个宾语从句,当