备战英语高考:如何快速正确地做从句题?很实用的技巧!
从句往往是很多学生的难点,碰到从句的题时,很多学生就头疼。其实很多时候不是学生不会做这类题,而是他们
没有掌握做此类题的方法。那怎样才能快速地做这样一类题呢?我个人认为,有以下几点:
一、要能快速而准确地断句
当学生们碰到一个难长句的时候,很多学生一下子就懵了,不知道从哪着手。其实第一步就是要找出句子的主干,
明白句子的中心意思。这样才能把主句和从句分开。比如:
Anyone who cares about what schools and colleges teach and how their students learn will be
interested in the memoir ( 回 忆 录 ) of Ralph W. Tyler, who is one of the most famous men in American
education.
我们来分析句子的结构:这是一个复合句。首先找出句子的主干:Anyone will be interested in the memoir。
Anyone 是主语,谓语是 will be interested in,memoir 是宾语。
Anyone 后面是一个由 who 引导的定语从句,用来限定 Anyone 所指的范围。在这个从句中,又包含两个由 and
连接并分别由 what 和 how 引导的宾语从句,表示 cares about 的内容。
二、判断从句所属类型
我们已经把主句和从句分开了,现在要做的就是判断一下从句到底是什么从句。
英语中存在三类从句:定语从句、状语从句和名词性从句。
判断的方法在于:看从句在整个句子中充当什么成分。充当定语就是定语从句,充当状语就是状语从句,充当主语
就是主语从句。在这一步骤中又存在一些方法:
一般来说,只要使用在名词或代词后面的从句都是定语从句;
放在介词和动词后面的都是宾语从句;
句中有 it 做形式主语或形式宾语的话,那么后面的从句就是主语或宾语从句;
放在系动词和一些相当于系动词的词(remain, get, turn)后面的都是表语从句;
放在一些抽象名词后面的且在从句中不充当成分的都是同位语从句。比如:
It is by no means clear _____the president can do to end the strike.
句子的主干就是 it is by no means,显然在这个句中 it 充当的是形式主语,后面的_____the president can do 就
是一个主语从句,这是从句中缺少主语,我们就填的是 what.
A lot of language learning, _____ has been discovered, is happening in the first year of life, so parents should talk much to their children during the period.
句子的主干就是 language learning is happening in the first year of life. _____ has been discovered 用来修
饰整个主句的内容,又放在主句的中间,所以这是一个非限制性定语从句修饰整个主句的内容。我们都知道在定语从句
中内代替整个句子内容的有两个引导词:which 和 as,只有 as 在引导非限制性定语从句时能放在句中,所以这个地方
填的就是 as。
________he is, he will be thinking of you.
显然这句话的主干就是:he will be thinking of you. _____ he is 在整个句子当中充当的就是状语,所以这部分就
是状语从句。在这个状语从句中缺乏的就是表语,想到众多的引导词以后,我们最终选择了 wherever。因为 wherever
的意思是“无论在哪”,刚好符合题意,所以是最合适的一个。
Is this desk____ he bought for me yesterday?
Is this the desk _____ he bought for me yesterday?
碰到一般疑问句了,怎么办呢?我们第一步就是要把它变成陈述句。所以第一句话的主干就是 this desk is…,第二
句话的主干就是 this is the desk。很显然,第一句话后面的从句 he bought for me 就是一个表语从句,而第二句话后
面的从句 he bought for me 就是一个定语从句。在第一句话中,表语从句中缺乏宾语,所以填的就是 what。在第二
句话中,定语从句中缺的也是宾语,我们填的是 which/that 或不填。所以做题时一定要细致,向这两个题的区别就在
于一个定冠词 the.
三、判断从句中缺什么成分
判断从句中缺什么成分,然后根据各种从句的规则选择引导词。值得注意的有:
(1)在定语从句中,除了 as 之外的引导词,其他词都没有实在意义。还有就是定语从句中的引导词不包括
what, how 和-ever 型的词,在状语从句中的引导词不包括 that。在名词性从句和状语从句中,除了要判断出从句中
所缺成分之外,还要把引导词的意思带进句中,这样才能最终选择出答案。
(2)关于 that 在各从句中的作用。我们都知道 that 在定语从句中指人或物,在从句中充当主语、宾语或表语。
而 that 在名词性从句中则不充当任何成分,也没有实在意义。
(3)关于 no matter+疑问词和-ever 型的疑问词的适用范围。no matter+疑问词只能引导状语从句,而和-ever
型的疑问词既可引导名词性从句,又可引导状语从句。
(4)在定语从句中,如果引导词后面紧跟了一个名词,那么引导词一定填的是 whose,此时的 whose 可以和 of
which/whom +名词或者是 the+名词+of which/whom 互换。
(5)在定语从句中缺的成分只有主宾表或状语。如果在判断完句子都不缺主要成分的情况下,那肯定就是缺状语。要注意一些特殊的先行词在句中充当状语时,用的是引导词 where。比如:position, occasion, condition, stage 等。
请分析下面的句子:
①Sorry I’m late, but you cannot imagine ______ trouble I took to find your house.
②—Why didn’t you chat with that friendly foreigner just now?
-- I’d like to have, but the trouble was _____ he said was difficult for me to understand.
③She’ll never forget her stay there _____ she found her son who had gone missing two years before.
④“I’d like to give my thanks to those _____ help my son will be able to survive his terrible disease.”
Said the mother on TV.
⑤Some people are worried about the year 2012 _____ they think the earth will end in disaster,
Keys: what; that what; when; with whose; when.
下面请大家分析一下的难长句,找出句子的主干以及分析句中的其他成分。
1. This will be particularly true since energy pinch will make it difficult to continue agriculture in the
high-energy American fashion that makes it possible to combine few farmers with high yields.
结构分析:句子的主干是 This will be particularly true…。since 引导原因状语从句。此从句中又套嵌一个由关系代
词 that 引导的定语从句,修饰 the high-energy American fashion。在定语从句中,that 做主语,makes 做谓语,
it 做形式宾语,不定式短语 to combine few farmers with high yields 则是真正的宾语(不定式短语内部 to combine
是主干,few farmers 是宾语,with high yields 是状语),possible 做宾语补足语。this 指代前句中提到的这种困境。
energy pinch 译为“能源的匮乏”;in…fashion 译为“用…方法、方式”。
译文:这种困境将是确定无疑的,因为能源的匮乏,高能量消耗这种美国耕种方式将很难在农业中继续下去,而这
种耕种方式使投入少数农民就可获得高产成为可能。
2. Now since the assessment of intelligence is a comparative matter,we must be sure that the scale
with which we are comparing our subjects provides a“valid”or“fair”comparison.
结构分析:句子的主干是 we must be sure…。since 引导原因状语从句 the assessment of intelligence is a
comparative matter 。主句 中又有 that 引导 的宾语 从句 that the scale with which we are comparing our
subjects provides a“valid”or“fair”comparison。此宾语从句中又套嵌一个由介词 with+which 引导的定语从句
with which we are comparing our subjects 修饰先行词 the scale。scale 在此处意为“尺度、衡量标准”。
译文:既然对智力的评估相比较而言的,那么我们必须确保,在对我们的对象进行比较时,我们所用的尺度能够提
供“有效的”或“公平的”比较。3. In general,the tests work most effectively when the qualities to be measured can be most precisely
defined and least effectively when what is to be measured or predicted can be not well defined.
结构分析:句子的框架是 the tests work most effectively when…and least effectively when…。and 连接两个
并列分句,每个并列分句中皆有一个 when 引导的时间状语从句分别说明 work most effectively 和 and(work)least
effectively。第二个时间状语从句中还有一个主语从句 what…predicted。the tests 是主句的主语,work 为动词做
谓语。qualities 在此处是可数名词,不译为“质量”,而译为“特征”。defined 不能直译为“被定义为”,而应译为主
动语态“界定”。
译文:一般来说,当所需要测定的特征能被精确界定时,测试最为有效;而当所测定或预测的东西不能被明确界定
时,测试效果最差。
4. For example,they do not compensate for gross social inequality,and thus do not tell how able an
underprivileged youngster might have been had he grown up under more favorable circumstances.
结构分析:句子的框架是 they do not compensate…,and thus do not tell how…。and 连接两个并列分句,
第二个并列分句中由 how 引导的宾语从句是一个带有虚拟条件句的主从复合句,其中 had he grown up…(=If he
had grown up…)是省略了连词 if 的非真实条件句。主句主语的 they,在此代指上文提到的 tests; able 在句中作 might
have been 的表语。underprivileged 在此不能译为“没有特权的”,而译为“没有地位的”或“物质条件差的”。
译文:例如,测试并不能弥补明显的社会不公;因此,它们不能说明一个物质条件差的年轻人,如果在较好的环境
中成长的话,会有多大才干。
5.It leads the discussion to extremes at the outset:it invites you to think that animals should be treated
either with the consideration humans extend to other humans,or with no consideration at all.
结构分析:句子的框架是 It leads the discussion to extremes at the outset: it invites you to think that…。冒号
后的复合句是对冒号前部分作进一步说明。复合句中 that 引导宾语从句,从句中有 either…or…引导的两个并列的介
词结构作状语,修饰动词 be treated,其中第一个 with 介词结构中还有一个省略了关系代词 that 或 which 的定语从
句 humans extend to other humans,修饰 the consideration。it 代指上文的观点,即如果对人权没有达成一致看
法,而谈论动物的权利是徒劳的。介词短语 at the outset 译为“从一开始”。动词 invites 应转译为“使”、“让”或“促
使”。动宾结构 extend consideration to 意为“给予关怀或关心”,consideration 不应译为“考虑”。
译文:这种说法从一开始就将讨论引向极端,它使人们认为应该这样对待动物:要么像对人类自身一样关怀体谅,
要么完全冷漠无情。
6. But even more important,it was the farthest that scientists had been able to look into the past,for what they were seeing were the patterns and structures that existed 15 billion years ago.
结构分析:句子的框架是 it was the farthest that…。但 It was…that…在本句中不是强调句型。it 是指上句中所提
到的 150 亿年前形成的巨大云团(a strip of enormous cosmic clouds some 15 billion light-years from earth);that
引导的应是一个定语从句,修饰先行词 the farthest。for 引导的是表示原因的分句,分句中还有 that 引导的定语从句,
修饰 the patterns and structure。
译文:但更重要的是,这是科学家们所能观测到的有关过去的最为遥远的景象,因为他们看到的是 150 亿年前宇宙
云的形状和结构。
7. Thus it happened that when the new factories that were springing up required labor , tens of
thousands of homeless and hungry agricultural workers,with their wives and children,were forced into the
cities in search of work,and any work,under any condition,that would keep them alive.
结构分析:句子的框架是 it happened that…。it 做形式主语,that 引导的从句做真正的主语。主语从句中,又有
一个由 when 引导的时间状语从句,主句为 tens of thousands of homeless and hungry agricultural workers…
were forced…,时间状语从句中从句主语 the new factories 又带有一个定语从句 that were springing up; that
would keep them alive 做 work 的定语从句。spring up 意为“发生,出现,建立”。
译文: 于是就出现了这样的情况:正当新办的工厂纷纷建立,需要劳动力的时候,成千上万无家可归、饥肠辘辘、以
农业为生的劳动者携家带口,被迫进入城市;他们要找活干,不管什么活儿,不论什么条件,只要不被饿死就行。
8. As a result of two or three centuries of scientific investigation we have come to believe that nature is
understandable in the sense that when we ask her questions by way of appropriate observations and
experiments,she will answer truly and reward us with discoveries that endure.
结构分析:句子的框架是…we have come to believe that…。that 引导的从句做 believe 的宾语从句;此从句中
有一个 that 从句作 the sense 的同位语从句;同位语从句中又套嵌一个由 when 引导的时间状语从句;此时间状语从句
又套嵌一个定语从句 that endure,修饰其先行词 discoveries。by way of 意为“经由,通过…方法”;reward sb. with
意为“以…报答,酬劳”;endure 此处应译为“持久,持续”,不要译为“忍受,容忍”。
译文:由于两三个世纪以来的科学研究成果,我们逐渐相信,如果运用合适的观察和实验方法向大自然探究问题,
她会真心实意地给我们答复,并且以永垂不朽的发现来报答我们。从这个意义上来说,大自然是可以认识的。
9. These new observational capabilities would result in simply a mass of details were it not for the fact
that theoretical understanding has reached the stage at which it is becoming possible to indicate the kind of measurements required for reliable weather forecasting.
结构分析:句子的框架是 These new observational capabilities would result in simply a mass of details…。后
面紧跟省略了 if 引导的虚拟条件句 were it not for the fact that…,即 if it were not for the fact that…;that 从句作
the fact 的同位语从句。此从句中又套嵌一个定语从句,修饰其先行词 the stage; required for reliable weather
forecasting 为过去分词短语修饰 the kind of measurements。simply 译为“只不过,仅仅”,不应译为“简单地”。
译文:理论上的认识已达到了这样一个阶段,即现在已能指出需要哪种测量方式才能可靠地预报天气。如果做不到
这一点,那么上述这些新的观察能力只不过提供了一大堆细节而已。
10. The story of the discovery of what is now generally called the principle of Archimedes,namely that a
solid body when immersed in a liquid loses a portion of its weight of the liquid it displaces , has many
different versions,of which the following is one.
结 构 分 析 : 句 子 的 框 架 是 The story … has many different versions … 。 what is now generally called the
principle of Archimedes 为 名 词 性 从 句 做 介 词 of 的 宾 语 。 namely that a solid body … 作 the principle of
Archimedes 的同位语;when immersed in a liquid 是省略了主语的过去分词短语,句子补充完整为 when the solid
body is immersed in a liquid,修饰其主句 a solid body loses a portion of its weight of the liquid…;it displaces 是
省略了关系代词 that 的定语从句修饰 the liquid,it 代指前面提到的 the solid body;同时,of which the following is
one 又构成先行词 versions 的定语从句。displace 意为“排(水)”;version 不译为“版本”,此处指“根据个人观点
的(对事件等的)说法,看法”;句尾的 one 代指 a version。
译文:当固体浸没到液体中时,固体会失去它所排出的液体的那部分重量,这就是现在通常所谓的阿基米德原理。
有关这一发现的故事说法众多,下面的故事就是其中之一。