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引导时间状语从句的从属连词(词组)有:1. When, as , while, before, after, till, until, since, as soon as, once, whenever, hardly. When., scarcely. When., no sooner.than.等。2. Every time, the first/ next time, the moment/ minute/ instant, the day等词引导时间状语从句。3. Immediately, directly, instantly常作连词,引导时间状语从句,词义同as soon as, the moment.1. 定语从句的省略在限制性定语从句中,常可省略作宾语的关系代词;在way(方式),time和moment后的that也常被省略;当先行词是time, reason,place时,作状语的关系代词when,why,where也可以省略。2. 状语从句中的省略A. 在when,while,whenever,till, as soon as, if,unless,as if,though,as,whether等引导的状语从句中,若谓语有be且主语又跟主句主语相同或从句主语是it时,则从句的主语和be常被省略,结构常为:连词(though,whether,when)+形容词;连词(whether, as if,while)+介词短语;连词(when,while,though)+现在分词;连词(when,if,even if, unless, once, until, than, as)+过去分词;连词(as if, as though)+动词不定式B.虚拟条件句常可以省略if,将were,should,had提前。练习:1. He smiled politely _ Mary apologized for her drunken friends.A. as B. if C. unless D. though2. You must learn to consult your feelings and your reason _ you reach any decision.A. although B. before C. because D. unless3. I have heard a lot of good things about you _ I came back from abroad.A. since B. until C. before D. when4. _ I have to give a speech, I get extremely nervous before I start.A. Whatever B. Whenever C. Whoever D. However 5. I had hardly got
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