although和while连词的区别在哪儿

　　although和while

　　although和while都是连词，都可引导让步状语从句，但在用法上有很大区别。

　　although为从属连词，引导让步状语从句，意为“虽然，尽管”，相当于though，所引导的句子通常置于句首.

　　Although it was only four o'clock，the lights were already on. 尽管才四点，灯却已经亮了

　　Although he is still young his hair is grey. 虽然他还很年轻，但头发已经灰白一双

　　while意为“然而，但是”，用作并列连词，表示前后的对比，所引导的句子不能置于句首

　　Jack likes football，while his brother likes basketball.. 杰克喜欢足球，而他的弟弟却喜欢蓝球.

　　[注意] while也可用作从属连词，引导让步状语从句，意为“虽然，但是”，可和although换用

　　While/Although we don't agree，we continue to be friends.

　　尽管我们意见不同，但我们还是朋友

　　While/Although it was so cold，he went out without an overeoat.虽然天气很冷，但他没有穿大衣就出去了．