While用法小结.doc

While 用法小结: 一、 while 用作名词时,意为“一段时间,一会儿”。例如: I stayed there for a short while. (我在那儿呆了一小会儿。) The postman came a short while ago. (邮递员刚刚来过。) 二、 while 用作连词时,有以下几种含义: “当……时候,和……同时”,引导时间状语从句。例如: While I was watching TV, the bell rang. (我看电视时,铃响了。) Meimei watched TV while she ate her supper. (梅梅边吃晚饭边看电视。) “虽然,尽管”,引导让步状语从句。例如: While it was late, he went on working. (虽然很晚了,但他还在继续工作。) While he isin poor health, he works hard. (虽然他身体不好,但他还是努力工作。) as long as ,译作“只要”。例如: While there is life, there is hope. (有生命,就有希望。) While a spark of life remains, itisa doctor's duty to save the patient. (只要病人还有一息生机,医生就有责任挽救。) , 相当于 since ,有“既然”的意思。例如: You'll never save any money while you're so extravagant. (你这么奢侈,永远存不下钱来。) I'd like to get it settled today while we're at it. (既然我们着手干了,我想今天就把它干完。) ,表示“对比”关系。例如: He went out for a walk, while I stayed at home. (他出去散步了,而我却呆在家里。) I like singing while she likes dancing. (我喜欢唱歌,而她喜欢跳舞。) You like sports, while I prefer music. (你喜欢体育,而我更喜欢音乐。) 三、 while 引导状语从句时,应注意以下几点: 1. while 引导的时间状语从句既可放在句首,也可放在句末;而 while 引导的让步状语从句一般放在句首,不放在句末。另外,也可以从意义上加以区分。例如: While he was tired, he went on working. (虽然他累了,但他还是继续工作。) ( while 引导让步状语从句) While he was tired, he would have a rest. (他累了就休息一会儿。) ( while 引导时间状语从句) 2. while 引导让步状语从句时,如果从句的主语和主句的主语相同,那么从句的主语和谓语动词 be 都可以省略。例如: While he was ill, he went there. (= While ill, he went there. ) (虽然他