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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（=during the time that在…期间，当…时候；at the same time as与…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）当她在打电话时，我正在寫信。
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 （=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）
while在时间状语从句中的使用（=during the time that在…期间，当…时候；at the same time as与…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）当她在打电话时，我正在寫信。
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 （=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）