2024年3月27日發(作者:一面鏡子)

【語法探究】原因狀語從句和目的狀語從句
一.原因狀語從句表示主句發生的原因,它的引導詞有becau, as, since, for 等,但是
一般來說,becau語氣最強,也最常用。
①
becau語勢最強,用來說明人所不知的原因,回答why提出的問題。becau表示 直接原
因,它引導的原因狀語從句一般放于主句之后,有時也放在主句前。如: 【didn't go out at
night, becau I was afraid.因為我膽小害怕,所以我晚上不敢外出。
注意:becau習慣上不與so連用,漢語習慣上說“因為……所以……”,但英語習慣上 卻
不能將so與becau連用。如:
因為下雨,所以我們呆在家里。
正:Becau it was raining, wc stayed at home. / It was raining, so we stayed at home.
誤:Becau it was raining, so we stayed at home.
② since引導的原因狀語叢包二般放壬主句之前表示己知的、顯然的理由(通常被翻譯成 “既
然”),較為正式,語氣比becau弱。如:
Since you are free today, you had better help me with my maths.既然今天你休息,你最好幫 我補
習數學一as引導原因狀語從句時表示附帶說明的“雙方已知的原因",語氣比since弱,較為
正式,位置較為靈活(常放于主句之前)。
如:As it is raining, you'd better take a taxi.既然在下雨,你最好乘出租汽車。
As you are tired, you had better rest.既然累 了,你最好休息一T。
③ for引導的原因狀語從句并丕說明主旬行為發生的直接原因,只提供一些輔助性的補 充說
明,for引導的原因狀語從句只能放于主句之后并且必須用逗號將其與主句隔開。如: He could
not have en me, for I was not there.他不可能見過我,因為我不在那里。
二.用來說明主句中謂語動詞發生的目的的從句叫做目的狀語從句。表示目的狀語的從句 可以
由that(以便),so that(以便),in order that(為了;以便),等詞引導;目的狀語從句 的
謂語常含有may, might, can, could, should, would等情態動詞。
如: You must speak louder so that /in order that you can be heard by all.
學習目的狀語從句應注意以下幾點:
⑴目的狀語從句中常含有can, could, may, might, should等情態動詞。例如:
I got up early so that I could catch the first bus.我起得很早,0的是為了趕上頭班公共汽車。 (2)
在口語中s。可以引導目的狀語從句。例如:
We'll sit nearer the front so we can hear better.我們坐的靠前一點,因此,我們聽得清楚一點。 ⑶
in order that 與 in order to 的區別:
in order that+從句in order to+動詞原形
(
in order to后面跟的不是目的狀語從句,而
是目的狀語)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.
他起床很早是為了趕上第-班公共汽車。
目的狀語從句的一個特點:畝于FI的都是未來的行為,所以從句中一般用表示未來可能性 時
態,比如上面句中的couldo當然還可以用will, would, can,等。
(4) so that可以引導目的狀語從句,從句只能放在主句之后,此時可以和in order that 換用。
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.他起床很早是為了趕上第一班公共汽車。
【注意】sothat也可以引導結果狀語從句。其引導結果狀語從句時,so that翻譯為“以 至于”,
經常可以和so/such.
??
that..
?
轉換,且從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學遲到了。
三.連詞so有時還可以引導結果狀語叢包心思是“由于某個行為而導致的結果”。表示 由于
前面(主句)的原因而導致后面(從句)的結果。這種結果狀語從句一般只能用于主 句之后。
如:
It was a neck and neck race, so at last they stopped playing and shook hands. 這是一場勢均 力敵
的比賽,藥耘后他們放棄角逐握手言和。
He waited in silence, so I had to go on with the discussion.他一聲不響地等著,結果我不得 不繼
續討浴廠
It was very dark then, so I could not e what was happening,那時天很黑,所以我看不見正 在發
生的事情。
【同步互動】
① (2013 廣西賀州)Tony never spends money on buying books he doesn't likereading.
A. butB. becau C. thoughD. until
② (2013 四川宜賓)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 東薄澤)Some of the students are nearsightedthey spend too much timewatching TV
or playing online games.
A. when B. though C. becauD. unless
⑤ (2014 山東濱州)The teacher asked me to read aloudall the students couldhear me.
A. so thatB. forC. becauD. in order to
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