2024年3月27日发(作者:一面镜子)
【语法探究】原因状语从句和目的状语从句
一.原因状语从句表示主句发生的原因,它的引导词有becau, as, since, for 等,但是
一般来说,becau语气最强,也最常用。
①
becau语势最强,用来说明人所不知的原因,回答why提出的问题。becau表示 直接原
因,它引导的原因状语从句一般放于主句之后,有时也放在主句前。如: 【didn't go out at
night, becau I was afraid.因为我胆小害怕,所以我晚上不敢外出。
注意:becau习惯上不与so连用,汉语习惯上说“因为……所以……”,但英语习惯上 却
不能将so与becau连用。如:
因为下雨,所以我们呆在家里。
正:Becau it was raining, wc stayed at home. / It was raining, so we stayed at home.
误:Becau it was raining, so we stayed at home.
② since引导的原因状语丛包二般放壬主句之前表示己知的、显然的理由(通常被翻译成 “既
然”),较为正式,语气比becau弱。如:
Since you are free today, you had better help me with my maths.既然今天你休息,你最好帮 我补
习数学一as引导原因状语从句时表示附带说明的“双方已知的原因",语气比since弱,较为
正式,位置较为灵活(常放于主句之前)。
如:As it is raining, you'd better take a taxi.既然在下雨,你最好乘出租汽车。
As you are tired, you had better rest.既然累 了,你最好休息一T。
③ for引导的原因状语从句并丕说明主旬行为发生的直接原因,只提供一些辅助性的补 充说
明,for引导的原因状语从句只能放于主句之后并且必须用逗号将其与主句隔开。如: He could
not have en me, for I was not there.他不可能见过我,因为我不在那里。
二.用来说明主句中谓语动词发生的目的的从句叫做目的状语从句。表示目的状语的从句 可以
由that(以便),so that(以便),in order that(为了;以便),等词引导;目的状语从句 的
谓语常含有may, might, can, could, should, would等情态动词。
如: You must speak louder so that /in order that you can be heard by all.
学习目的状语从句应注意以下几点:
⑴目的状语从句中常含有can, could, may, might, should等情态动词。例如:
I got up early so that I could catch the first bus.我起得很早,0的是为了赶上头班公共汽车。 (2)
在口语中s。可以引导目的状语从句。例如:
We'll sit nearer the front so we can hear better.我们坐的靠前一点,因此,我们听得清楚一点。 ⑶
in order that 与 in order to 的区别:
in order that+从句in order to+动词原形
(
in order to后面跟的不是目的状语从句,而
是目的状语)如:
He got up early in order to take the first bus.= He got up early in order that he could take the first bus.
他起床很早是为了赶上第-班公共汽车。
目的状语从句的一个特点:亩于FI的都是未来的行为,所以从句中一般用表示未来可能性 时
态,比如上面句中的couldo当然还可以用will, would, can,等。
(4) so that可以引导目的状语从句,从句只能放在主句之后,此时可以和in order that 换用。
如:He got up early so that he could take the first bus. = He got up early in order that he could take the
first bus.他起床很早是为了赶上第一班公共汽车。
【注意】sothat也可以引导结果状语从句。其引导结果状语从句时,so that翻译为“以 至于”,
经常可以和so/such.
・・
that..
・
转换,且从句只能放在主句之后。如:He got up solate that
he was late for school,他起床如此晚以至于上学迟到了。
三.连词so有时还可以引导结果状语丛包心思是“由于某个行为而导致的结果”。表示 由于
前面(主句)的原因而导致后面(从句)的结果。这种结果状语从句一般只能用于主 句之后。
如:
It was a neck and neck race, so at last they stopped playing and shook hands. 这是一场势均 力敌
的比赛,药耘后他们放弃角逐握手言和。
He waited in silence, so I had to go on with the discussion.他一声不响地等着,结果我不得 不继
续讨浴厂
It was very dark then, so I could not e what was happening,那时天很黑,所以我看不见正 在发
生的事情。
【同步互动】
① (2013 广西贺州)Tony never spends money on buying books he doesn't likereading.
A. butB. becau C. thoughD. until
② (2013 四川宜宾)Mo Yan's books have been sold out in many book storeshiswinning of the
Nobel Literature Prize.
A. becau B. sinceC. asD. becau of
③ (2013 浙江舟山)The shops were clodI didn't get any milk.
A. soB. asC. orD. but
® ( 2013 上海)1 hate travelling by airyou usually have to wait for hours before theplane takes
off.
A. becau B. though C. untilD. unless
④ (2012 ill 东薄泽)Some of the students are nearsightedthey spend too much timewatching TV
or playing online games.
A. when B. though C. becauD. unless
⑤ (2014 山东滨州)The teacher asked me to read aloudall the students couldhear me.
A. so thatB. forC. becauD. in order to
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