高考语法复习8 状语从句【走进高考】1.【2018·江苏】_______ you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights.A. OnceB. UnlessC. IfD. When【答案】B【解析】考查连词词义辨析及语境理解。
句意：除非你睡得好，否则一两个晚上之后，你会失去专注、计划和保持动力的能力。
A. Once一旦；B. Unless除非；C. If如果；D. When当……时候。
故选B。
2.【2018·天津】Let's not pick these peaches until this weekend ___________they get sweet enough to be eaten.A. ever sinceB. as ifC. even thoughD. so that【答案】D【解析】考查连词短语辨析及语境理解。
句意：让我们这个周末再摘这些桃子，这样的话，它们吃起来就变得足够甜。
A. ever since自那时起；B. as if好像；C. even though尽管；D. so that以便。
从句为目的状语从句，故用so that引导。
故选D。
3.【2018·北京】_________ we don’t stop climate change, many animals and plants in the world will be gone.A. AlthoughB. WhileC. IfD. Until【答案】C【解析】考查状语从句。
句意：如果我们不阻止气候变化，那么世界上的很多动植物都将会消失。
动植物不灭绝的前提条件是阻止气候变化。
Although 尽管；While当……时候，尽管，然而；If如果；Until直到。
故选C正确。
4.【2017·北京】If you don’t understand something, you may research, study, and talk to other people _______ you figure it out.A. becauseB. thoughC. untilD. since【答案】C【解析】A. because 因为 B. though尽管 C. until直到 D. since自从句意：如果你无法理解某个东西，你可能会去研究，学习和他人探讨直到你解决为止，根据句意可知选用until，直到，选C。
5.【2017·北京】______ birds use their feathers for flight, some of their feathers are for other purposes.A. OnceB. IfC. AlthoughD. Because【答案】C【解析】A. Once 一旦 B. If如果 C. Although尽管 D. Because因为。
句意：尽管鸟儿们用羽毛来飞翔，但是他们的一些羽毛还有其他用途。
根据语境可知前后之间是让步关系，故选C。
6.【2017·北京】—Peter, please send us postcards ______ we’ll know where you h ave visited.—No problem.A. butB. orC. forD. so【答案】D【解析】A. but 但是 B. or 或者 C. for 因为 D. so因此句意：Peter，请给我们寄明信片，因此我们就会知道你们去哪游览过，根据语境可知前后句之间是因果关系，故用so，选D。
7.【2017·江苏】Located _______ the Belt meets the Road, Jiangsu will contribute more to the Belt and Road construction.A. whyB. whenC. whichD. where【答案】D【解析】考查状语从句。
be located in+地点名词，位于/坐落某地，where引导的地点状语从句在此相当于in some place，故选D。
句意：位于丝绸之路交汇处的江苏省将会对“一带一路”的建设做出更大的贡献。
8.【2016·北京】My grandfather still plays tennis now and then, ________ he’s in his nineties.A. as long asB. as ifC. even thoughD. in case【答案】C【解析】考查状语从句。
句意：即使是九十多岁了，我的爷爷仍然时不时地打打网球。
A. as long as只要，引导条件句；B. as if似乎，引导方式状语从句或表语从句；C. even though即使，引导让步状语从句；D. in case 以防，引导目的状语从句。
这里是转折关系，故选C。
9.【2016·北京】I am not afraid of tomorrow, ________ I have seen yesterday and I love today.A. soB. andC. forD. but【答案】C【解析】考查并列连词。
句意：我不害怕明天，因为我已经经历了昨天并且深爱着今天。
so后跟结果；and 表并列关系；for补充说明原因；but表转折。
故选C。
10.【2016·江苏】______some people are motivated by a need for success, others are motivated by a fear of failure.A. BecauseB. IfC. UnlessD. While【答案】D【解析】考察连词。
连词because因为；If如果；unless除非，如果…不…；while尽管，然而，当……时；句意：尽管一些人被成功的渴望驱使着，但是其他人却被失败的恐惧驱使着前进。
根据句意可知上下文之间存在转折关系，所以使用“while尽管… ”连接。
故选D。
【语法精讲】考点一时间状语从句一、when, while和as引导的时间状语从句failure.当一些人被成功的渴望所驱动的时候，另一些人却被失败的恐惧所驱动着。
◆(2016·天津卷)As the average age of the population increases, there are more and more old people to care for.随着人口平均年龄的增长，有越来越多的老年人需要照顾。
二、表示“一……就……”的连词引导的时间状语从句1．as soon as, the moment, the minute, the instant, immediately, directly, instantly◆(2016·上海卷)The moment my aunt gained her diploma after four years of hard work, she was filled with joy.我阿姨苦读四年之后获得了文凭，那一刻她欣喜万分。
2．在hardly...when..., no sooner...than...结构中，主句用过去完成时，than或when所在的从句用一般过去时。
◆(全国卷Ⅱ)I had hardly got to the office when my wife phoned me to go back home at once.我刚到办公室，妻子就打电话让我立刻回家。
三、before和since引导的时间状语从句1．before表示“在……之前；还未……就……；还没有来得及……就……”。
常用句式：It will be/was ＋一段时间＋before...过了……时间才……；It won’t be/wasn’t＋一段时间＋before...没过多久就……◆(天津卷)We need to get to the root of the problem before we can solve it.在我们解决问题之前，我们需要找到问题的根源。
◆(重庆卷)If you miss this chance, it may be years before you get another one.如果你错过了这次机会，可能需要很多年你才能再获得一次。
2．since意为“自从……以来”，常用句式：It is/has been＋一段时间＋since从句(常用过去时)。
since从句的时态若是一般过去时，主句的时态常用现在完成时或一般现在时。
◆As is reported, it is/has been over 100 years since Tsinghua University was founded.正如所报道的，自清华大学建立以来已有一百多年了。
四、till/until引导的时间状语从句until/till用于肯定句表示“直到……为止”，其主句谓语动词必须为延续性动词；not...until/till...表示“直到……才……”，not所在的主句的谓语动词必须为非延续性动词。
until可用于句首，而till不能。
◆(2017·北京卷)If you don’t understand something, you may research, study, and talk to other people until you figure it out.如果你遇到不懂的东西，可以搜索、研究以及和其他人交谈，直到你把它弄明白。
◆She didn’t start the lesson until the pupils settled down.等学生们安静下来后，她才开始上课。
五、every time, each time, next time, the first time, by the time等引导的时间状语从句◆(北京卷)By the time you have finished this book, your meal will get cold.等你看完这本书，你的饭就凉了。
[对点演练]——单句语法填空1．When she picked up the phone after dinner to continue the game, she started to feel that something was wrong with her right eye.2．At the same time, crowds of people stand on the shore watching the lanterns drifting away until/till they can be seen no more.考点二让步状语从句一、although, though, as和while引导的让步状语从句◆(2016·北京卷)Although these measures are not effective forever, they are vital for now.虽然这些措施并不能永远有效，但它们目前是至关重要的。