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细研高考,while出现的频率较高,while可以作为连词引导时间状语从句,也可以引导让步状语从句、条件状语从句等.while在时间状语从句中的使用（等于during the time that在等期间,当等时候；at the same time as与等同时）：此时while只指“时间段”,不指“时间点”,用于较长的时间,强调主从关系的谓语动作同时进行,从句的动词只限于持续性动词.Eg：While I was Madrid there was a carnival.我在马德里的时候,正赶上狂欢节.While Mary was writing a letter,the children were playing outside.玛丽写信时,孩子都在外面玩.He listens to the radio while driving to work.他去上班,边开车边听音乐.当从句动作和主句动作同时发生,且从句的谓语动词是延续性动词时,可用when和as替换while引导状语从句：Eg；whenwhileas we were dancing,a stranger came in（dance 为 延续性动词）当我们跳舞时,一位陌生人进来.When while as she was making a phone call,i was writing a letter（make 为延续性动词）当她在打时,我正在写信.3. 从句的动作若表状态,通常用while.Eg：Strike while the iron is hot.趁热打铁.当while表示同时存在的两种事物对比时,while为并列连接词,引导的是并列句,译作“然而”.Eg：I drink black coffee while he prefers it with cream.English is understood all over the world while Turkish is spoken by only a few people outside Turkey itself.while （等于although）作连词‘虽然‘,引导让步状语从句.Eg：While I admit that there are problems,I don’t agree that they cannot be solved.尽管我承认有问题存在,但我不同意说这些问题不能解决.While I understand what you say,I can’t agree with you.尽管我明白你的话,但我还是不同意.while做连词“只要”,引导让步状语从句：Eg：While there is life,there is hope.只要有生命就会有希望（生命常在,希望常在）.（作者单位：陕西省靖边中学）