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1、时间状语从句 问题1： Don’t be afraid of asking for help D it is needed. （03全国卷） A．unless B．since C．although D．when 根据句意，此处只能为时间状语从句，故答案为D。 unless 引导条件状语从句，意为“除非”；although 引导让步状语从句，意为“虽然”；since 虽引导时间状语从句，但意思为“从…以来”，这些都与题意无关。引导时间状语的引导词很多，复习when 时要注意比较它与while 与 as 的区别。 when, while, as 三者的具体用法关键在于动作发生的时间及从句的动词。while 表时间，从句需用延续性动词，不用瞬间动词；when 表时间，从句既可用延续性动词，又可以用瞬间动词；as 表时间，与when 相似，但侧重强调主、从句动作同点或同段进行，可用延续行动词的一般过去式表式过去进行时。when, while 后还可以接分词短语。when 作并列连词，表示一个动作在发生时，另一个动作接着发生，这时就不能用while、as。 I was walking on the street when suddenly someone patted me on the shoulder. while 作并列连词，表示两种情况对比。 He was playing the guitar while his sister was watching TV. 问题2： 1) — Was his father very strict with him when he was at school? — Yes. He had never praised him C he became on top students in his grade. （03北京春季） A．after B．unless C．until D．When 2) Simon thought his computer was broken __A______ his little brother pointed out that he had forgotten to turn it on. （05北京春季） A. until B. unless C. after D. because
until / till “直到……止”(肯定句，主句是延续性动词); not…until “直到……才”(否定句，主句是终止性动词); until 可用于倒装句和强调句，till不用于句首。 Not until I returned did she finish her homework. It was not until I returned home that she finished her homework. 问题3： 1、The American Civil War lasted four years ___B___ the North won in the end. (05广东卷) A. after B. before C. when D. then 2、He made a mistake, but then he corrected the situation _C_____ it got worse. （03北京） A. until B. when C. before D. as before 从句是高考中的一大热点，从时间概念上不难作出判断。注意它的翻译：在肯定句中一般翻译成“…（主句的动作）才…（从句的动作）”，如题1；或“还没有…（从句的动作）就…（主句的动作）”，如题2。 问题4： — Did you remember to give Mary the money you owed her? — Yes, I gave it to her __B_____ I saw her. （01北京春季） A．while B．the moment C．suddenly D．on the time（当……的时刻）, the moment / minute / second / instant (一… 就… ), next time (下次), the first time(第一次…的时候), the last time (上次…的时候)，immediately（一…就…）, instantly（一…就…）, directly（一…就…）等词或词组可引导表示时间的状语从句；还有一些表示习惯性动作的词如：every time（每次）, each time（每次）, whenever（每当）等也可引导表示时间的状语从句。 2、条件状语从句 问题1： 1、The WTO cannot live up to its name _C___ it does not include a country that is home to on A．as long as B．while C．if D．even though 2、 It is known to all that _A____ you exercise regularly, you won’t keep good health. （05重庆卷） A. unless B. whenever C. although D. if unless 相当于 if not，意思是“除非…”“如果不…就…”。这也是高考的热点之一。复习时也应给予高度重视。 问题2： 1、__B___ I can see, there is on away from the danger. （04北京春季） A. As long as B. As far as C. Just as D. Even if 2、I always take something to read when I go to the doctor’s __A______ I have to wait. （05全国卷3） A．in case B．so that C．in order D．as if as long as 与 as far as 都可引导条件状语从句，as long as 表示“只要…”，as far as 表示“就…而论（而言）”。题1根据题意应该选用B。in case 表示“以防”，根据题2的句意，不难作出选择。 3、让步状语从句 问题1： 1、 __A___ I accept that he is not perfect, I do actually like the person. （04江苏） A. While B. Since C. Before D. Unless 2、Allow children the space to voice their opinions, _B___they are different from your own. (05湖南卷）(B) A. until B. even if C. unless D. as though while 是高考中的高频词，它既可引导时间状语从句，又可引导并列句，还可引导让步状语从句，表示“尽管”。even if 等于 even though，表示“即使、尽管”。as though 等于 as if，引导方式状语从句，表示“好像、似乎”。 问题2： 1、 He tried his best to solve the problem, _A__ difficult it was. （05天津卷） A. however B. no matter C. whatever D although 2、The old tower must be saved, _B_____the cost. （05浙江） A．however B．whatever C．whichever D．wherever no matter wh- 与 wh-ever 的联系及区别： no matter wh- 只引导让步状语从句，此时与 wh-ever通用。 如: No matter when / Whenever he comes back, he should be invited to the party. wh-ever又可引导名词性从句， No matter wh-不能。如： Whatever I can do for you will be nothing but paying a debt. Whoever can help us will be welcome 4. 状语从句的时态问题 问题1： 1、The house could fall down soon if no on quick repair work. （04全国IV） A has done B is doing C does D had done 2、It is almost five years ___B____ we saw each other last time. （05北京春季） A. before B. since C. after D. when 在条件，时间和让步从句中，用一般现在时表示一般将 来时，用现在完成时表将来完成时，用一般过去时表过去将 来时。在 since 引导的时间状语从句中，动词一般都用一般 过去时，而主句常用现在完成时。 5、状语从句的倒装问题 问题1： 1、So difficult _D____ it to live in an English-speaking country that I determined to learn English. (01 上海) A. I have felt B. have I felt C. I did feel D. did I feel 2、Not until all the fish died in the river, _A____ how serious the pollution was. (95 NMET) A. did the villagers realize B. the villagers realized C. the villagers did realize D. didn’t the villagers realize 状语从句的倒装一般有下面几种情况：① 否定词开头； ② so 加 adj. 开头；③ as / though引导的让步状语从句。 特别注意： Hardly … when … No sooner … than … Child as he is, … Hardly had he got to the station, the train left. No sooner had he got to the station, the train left. Child as he is, he can speak seven foreign languages. 6、状语从句与并列句的区别 问题1： 1、Though he is in his sixties, __A____ he works as hard as a young man A. yet B. but C. and D. and yet 2、 Excuse me for breaking in, __C_______ I have some news for you. (NMET02) A. so B. and C. but D. yet 题1是主从复合句，所以中间不能使用并列连词 and; or; but; so 等。yet 是副词，只有 yet 可以与 though 连用。题2为 并列句，而“Excuse …, but …”为一固定搭配。在复习中需要 细心的分析句子结构和成分。 |
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