3. Before she could move,she heard a loud noise. 她还没有来得及动弹,就听见很响的声音。
However, before she could think twice, the water was upon her. 但还没有回过身来,洪水便逼近了她。
该两句中的before用作连词,后接时间状语从句。before用作连词,接时间状语从句时,表示“在……之前”。但在不同的语境中,往往有比较灵活的译法。例如: He knocked me down before he saw me. 他差一点把我撞倒,才看到我。
【考例】(2005广东) The American Civil War lasted four years the North won in the end.
A. after B. before C. when D. then
[考查目标] 时间状语从句的引导词选择。
[答案与解析]B before 表示“直到……”。 www.kuaixue5.com
4. Tree after tree went down, cut down by the water, which must have been three meters deep. 洪水想必深达三米,树一棵接一棵地倒了,被洪水冲断了。
该句中的must have been表示推测。例如:You look so tired. You must have stayed up last night.
情态动词may,might,most.can,could常用来表示推测。may,might,must多用在肯定句中,can,could多用在否定句和疑问句中。may,might,must,can,could后接动词原形表示对现在的推测;may,might,must,can,could后接have done。表示对过去的推测。例如:
You may be a professor. / She must have met a fairy.
【考例】(2005辽宁)This cake is very sweet. You ____ a lot of sugar in it.
A. should put B. could have put
C. might put D. must have put
[考查目标] 情态动词表示推测。
[答案与解析] D 前文说蛋糕很甜,由此可知一定是糖
放多了。对于过去的动作的推测应使用have done的
结构,所以应在B、D之间做选择,又因为could have
done表示本可以做而没有做,所以选择D。
5. ... she heard a loud noise,which grew to a terrible roar. ……她听见了很响的声音,接着就变成了可怕的隆隆轰鸣声。
该句中的which引导非限制性定语从句。例如:He bought some reference books, which were all about science. 他买了许多的参考资料.都是有关理科的。
which 作为关系代词.既可以引导限制性定语从句,也可以引导非限制性定语从句。例如:The train which left for Beijing pulled in on time. 前往北京的火车按时进站了。His dog, which was now very old, became ill and died.他的狗,现在老了,生病死了。
【考例】(2005浙江) Jim passed the driving test, ____ surprised everybody in the office.
A. which B. that C. this D. it
[考查目标]非限制性定语从句。
[答案与解析]A which引导非限制性定语从句。指代
前面整个句子。that不能引导非限制性定语从句。
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