状语从句考点分析
考点一、时间状语从句
引导时间状语从句的词语主要有: when, while, as, after, before, since, ever since, until/till, whenever, as soon as, once, directly, immediately, instantly, hardly / scarcely… when, no sooner…than, the (very) minute / instant / moment, the first / second… / last time, last/next/any/each/every time, by the time, all the time, the whole time等。
【考例1】
He smiled politely ______ Mary apologized for her drunken friends. (2012山东)
A. as B. if C. unles D. though
解析：A。句意：当Mary为自己的酒醉朋友而道歉时，他礼貌地微笑着。as在句中引导时间状语从句。
【考例2】
I had hardly got to the office ______my wife phoned me to go back home at once. (2012全国II)
A. when B. than C. until D. after
解析：Ahardly…when…句型。句意：我刚到办公室，我妻子就给我打电话让我马上回家。
【考例3】
As is reported, it is 100 years ______ Qinghua University was founded. (2011四川)
A. when B. before C. after D. since
解析：D。句意：据报道，自从清华大学成立已经有100年了。句式“It is/has been+一段时间+since…” 表示“自从……(到现在)有多长时间了”。 “It is / was / will (not) be +一段时间+before…”常意为“过……才……”或“不久……就……”。
考点二、条件状语从句
条件状语从句常由if, unless, suppose/supposing (that), provided/providing (that), on condition that, as/so long as, given that, in case(如果)以及if only等词语引导。
【考例1】
______ we have enough evidence, we can’t win the case. (2013重庆)
A. Once B. As long as C. Unless D. Since
解析：C。句意：除非我们有足够的证据，否则无法打赢官司。
【考例2】
One’s life has value ______ one brings value to the life of others. (2012江苏)
A. so that B. no matter how C. as long as D. except that
解析：C。as long as只要。句意：一个人只要给别人的生命带来价值，那么他的生命也就有价值了。
考点三、地点状语从句
地点状语从句是表示主句谓语动作发生的地点的状语从句，引导词有where, wherever, anywhere, everywhere等。
【考例】
A number of high buildings have arisen ______ there was nothing a year ago but ruins. (2012山东)
A. when B. where C. before D. until
解析：B。句意：在一年前只有一片废墟的地方，许多高层建筑已经拔地而起。
【提示】引导地点状语从句时， where≠介词+which;只有引导定语从句时, where =介词+which。
考点四、原因状语从句
引导原因状语从句的连词主要有：because, since, as, now that等。
【考例】
—Coach, can I continue with the training?
—Sorry, you can’t ______ you haven’t recovered from the knee injury. (2012重庆)
A. until B. before C. as D. unless
解析：C。as在句中意为“因为”，引导原因状语从句。
考点五、目的状语从句
引导目的状语从句的词主要有：so that, in order that, in case(以防，以备)等。
【考例1】
Leave your key with your neighbor ______ you lock yourself out one day. (2012辽宁)
A. as long as B. even though
C. in case D. as if
解析：C。 in case在句中意为 “以防，以备”，引导目的状语从句。
【考例2】
The police officers in our city work hard _____ the rest of us can live a safe life. (2011上海)
A. in case B. as if
C. in order that D. only if
解析： C。句意：我们城市的警察工作努力以确保我们其余的人能够过上平安的生活。
考点六、结果状语从句
引导结果状语从句的连词主要有： so that, so...that, such...that等。
【考例】
Pop music is such an important part of society _____ it has even influenced our language. (2007上海)
A. as B. that C. which D. where
解析： B。该句是such…that…结构， that分句表示结果。
考点七、让步状语从句
引导让步状语从句的词语主要有①although, though, while, as (虽然, 尽管);②even if = even though (即使);③no matter+疑问词=疑问词+ever (不管，无论);④whether… (or…) (不管，无论……还是……)等。
【考例1】
______ I always felt I would pass the exam, I never thought I would get an A. (2012湖南)
A. While B. Once
C. If D. Until
解析：A。句意：虽然我总是觉得我能通过考试，但我从没想到我能拿到A。While在句中意为“虽然”。
【考例2】
______ hard you try, it is difficult to lose weight without cutting down the amount you eat. (2012湖南)
A. However B. Whatever
C. Whichever D. Whenever
解析：A。However在句中相当于No matter how，后面常跟形容词或副词。Whatever常修饰名词。 句意：不管你有多努力，如果不减少食量你就很难减肥成功。
【提示】
① although/though不与but连用，但可与still或yet连用。
②疑问词+ever (不管，无论)与no matter+疑问词的转换仅限于状语从句中。
③ even (副词)不引导让步状语从句;even so的意思是“即使如此”。
考点八、方式状语从句
引导方式状语从句的连词主要有：as if/as though, as, like, the way等。
【考例】
Jack wasn’t saying anything, but the teacher smiled at him _____ he had done something very clever. (2011湖南)
A. as if B. in case C. while D. though
解析： A。句意： Jack什么也没说，但老师向他笑了笑，好像他做了件聪明的事情。
考点九、比较状语从句
比较状语从句主要由as及than引导。
【考例】
According to statistics, a man is more than twice as likely to die of skin cancer ______ a woman. (2009江西)
A. than B. such C. so D. as
解析：D。句意：据统计，男性死于皮肤癌的几率是女性的两倍多。
