although 和 though的区别

although, as , though
三者都指(虽然),引导表示让步的副词子句. although比较正式;though则多用于口语. though引导的子句可以表示假设的条件.although引导的子句多为事实. as 引导的子句一般倒装. though可以和even, as 连用,但although不行.
She would not be happy though she should marry a millionaire.即使她嫁给百万富翁也不会高兴
Although he is a manager, he is of so-so ability.他是个经理,但他的能力平平.
Late as it was, I wanted to have a walk.虽然天晚了,我还是想去散步.
He looked at me as though I were mad.他看着我,像我是颠了似的.
Even though he is strong, he can not move the stone.即使他很强壮,也移动不了那块石头.

有共同之处，也有不同点。两都可用来引导让步状语从句，表示汉语的"虽然……但是……"。但不能说although / though...but...。如：不能说：Although / Though he is very old, but he is still quite strong. 句中的but 应去掉。Although是较为正式的用语，引导的从句多位于主句前，though多用于非正式文体中，引导的从句位于主句前后都可。

注意：though可用于倒装句中，although不可。如：Young though he is , he has worked for a few years.他虽然年轻但已经工作好几年了。

although
比though稍微正式些，although不用作副词。
例句：He is quite strong,although very old.
翻译：他虽然很老了，但还是十分健壮。
though
常用作连接词，意思是“虽然”，在口