while在让步状语从句和时间状语从句的区别

一,while引导时间状语从句,从句中的谓语动词应用延续性动词或表示状态的词.
eg.While the discussion was still going on,George came in.
当讨论还在进行时,乔治走了进来.
Strike while the iron is hot.
趁热打铁.
二、引导让步状语从句,多用于句首.意为“尽管,虽然”.
eg.While I admit his good points I can see his bad.
尽管我承认他的长处,但我也看到了他的不足.
While he loves his students,he is very strict with them.
虽然他爱他的学生,可是他对他们很严格.
这就是最主要的区别,另外,while还常常作并列连词用,意思为“而,然而”,表前后意义上的对比或转折.
eg.There’s plenty of rain in the southeast,while there's little in the northeast.
东南部雨量充足,而西北部则很少下雨.
Some people waste food while others haven't enough.
有些人浪费粮食,然而有些人却吃不饱.
有什么疑问还可以问我.