内容正文:
2020年初中英语中考语法基础版复习讲义(十七)原因、结果、目的状语从句知识点总结
状语从句有九大类,分别是时间、条件、地点、原因、结果、目的、让步、方式、比较状语从句。今天是状语从句的第二期,我们来学习第二排龙子,也即原因、结果和目的状语从句。
01
原因状语从句
原因状语从句是指一个句子充当原因状语而成的从句。该从句是对主句的原因的解释,引导词往往有“由于,因为”等含义。
常见的原因状语引导词如下:
because,直接原因
He can't go to school because he is ill.
他无法去学校,因为他病了。
since,显而易见的理由
Since you are free today, let's go and watch a movie.
既然你今天有时间,我们去看电影吧。
as,显而易见的理由,但语气更弱
As it starts to rain, we'd better stay inside.
鉴于已经开始下雨了,我们还是待在室内吧。
for,附带的理由
He must be very tired now, for his face looks pale.
他应该很累吧,因为他的脸色看起来有点苍白。
in that,表示“在于”
The democratic party is different from the republic one, in that they have different political guidelines.
民主党共和党是不同的,因为(在于)他们有不同的政治纲领。
now that,表示“既然”
Now that you have finished your study in the U.S., why don't you come back to serve your own country?
既然你已经完成了在美国的学业,你为什么不回来服务你的国家呢?
动名词做原因状语
Seeing that nobody is interested in our learning program, we decide to cancel it.
既然没人对我们的学习项目感兴趣,我们决定取消它。
02
结果状语从句
结果状语从句一般是指由so that和such that引导的在句子中充当结果状语的从句。其中so that既可以连着用,也可以用so…that结构。
具体用法如下:
so that,以达到……效果
I took an early bus so that I got there on time.
我搭乘了早班车,准时到了那里。
so+形容词/副词+that,太…以至于…
She is so weak that she can't walk any further.
她太虚弱了,以至于不能再多走路了。
注意:这种情况下等于too…to结构。
=She is too weak to walk any further.
so+形容词+名词短语+that,太…以至于
She is so lovely a girl that most of the boys like her very much.
她太可爱了,大多数男孩子都喜欢她。
such+名词短语+that
It is such a bad day that no one wants to go outside.
今天天气不好,大家都不想出去。
注意:这里的名词短语可以是:a/an+adj.+可数名词单数;adj+复数/不可数名词。
03
目的状语从句
在句中充当目的状语的从句称为目的状语从句,它的前两个引导词和结果状语从句一样(so that连用,so+形容词/副词+that)。
在引导词相同的情况下,如何区分结果和目的状语从句呢,且看:
a.目的状语从句中一般含有情态动词can/could/may/might/should等,而结果状语从句不含情态动词(例句请看上下文)。
b.目的状语从句表示主语的希望或愿望,一般尚未发生;而结果状语从句表示客观结果,往往已经发生了(例句请看上下文)。
具体用法如下:
so that,以便于
He speaks very loudly so that I could hear him.
他大声讲话,以便于我能听见。
so+形容词/副词+that,以便于
He gets up so early that he could catch the first bus to the city center.
他很早起床,以便于赶上最早发往市中心的巴士。
in order that/in order to do,为了
He gets up early in order that/s