備戰(zhàn)2016屆高考英語(通用版)一輪復習專題16 狀語從句
天越來越暗了似乎要下雨了。(表示真實情況,是直陳語氣)
she speaks as if she knew everything in the world.
她說話的樣子仿佛似她懂得天下事。(表示非真實情況,是虛擬語氣)
七、目的狀語從句
常用的引導詞有so that(以便,為了),in order that(為了),lest(以免,以防),in case(以免,以防),for fear(以免,以防)等。如:
we should do our utmost in order that we may be able to over fulfill the task.
為了超額完成任務,我們應該全力以赴。
you’d better leave your phone number,so that i can call you before i come next time.
你最好將電話號碼留給我,以便我下次來之前可以先給你打個電話。
batteries must be kept in dry places for fear that electricity leaks away.
電池應該放在干燥的地方,以免漏電。
要點提示:
在目的狀語從句中,我們可以將這些引導目的狀語從句的連詞so that,in order that,lest,in case,for fear分作為兩大部分:
表示肯定——so that,in order that是“為了使……發(fā)生(目的是……,為的是……)”。
表示否定——lest,in case,for fear是“為了使……不發(fā)生(以免,以防)”。
另外,在表示否定的目的狀語從句中,謂語動詞往往用“should+動詞原形”或“動詞原形”兩種虛擬句式。如:
he took his umbrella with him lest it should rain.他帶了雨傘,以防下雨。
i’ll keep a seat for you in case you should change your mind.
我給你留個座,沒準你會改變主意。
八、結(jié)果狀語從句
1.常用的引導詞有that(結(jié)果,以至),so that(結(jié)果,以至),so...that(如此……以至),such...that(如此……以至)等。如:
the temperature is increased so that the volume of gas becomes greater.
溫度升高了氣體的體積就增大了。
the mountain is so high that she can’t climb it up to the top.
那座山太高了,她無法登上山頂。
it is such a lovely day that everybody feels happy and gay.
天氣這么好,人人都感到高興、快樂。
注:1)so...that和such...that都是引導結(jié)果狀語從句的從屬連詞,它們都表示“如此……以至”,但其要求的句型結(jié)構(gòu)不一樣。
如:he ran so fast that his brother couldn’t catch up with him.
他跑得太快了,他弟弟趕不上他。
he is such a naughty boy that he becomes unwelcome in his neighborhood.
他是那么個調(diào)皮的孩子,以至在鄰里中不受歡迎。
she looks so lovely that everybody can’t help taking a look at her when passing her by.她生得太可愛了,從她身邊經(jīng)過的人都忍不住要看她一眼。
2)當so或such置于句首時,主句要用倒裝語序。如:
so clever was he that he was able to work out all the difficult problems.
他是如此聰明以至于他能解出所有的難題。
2.除結(jié)果狀語從句外,too...to...(太……而不能……),enough to...(能夠……),so...as to...(那么……以至于……)等不定式結(jié)構(gòu)同樣可以表示結(jié)果。如:
他起床晚了,結(jié)果誤了車。