两词都可以用来引导从句表示，尽管虽然的意思，但在用法上，两个词稍有不同：

though

用得最多的词，能引导一个表示事实、假设或承认某种可能性的从句：

Though they know the war is lost, they continue to fight.

although

可以与though换用，但常用在从句位于主句之前，引导表事实的从句：

Although they worked hard, their movements seemed painfully slow.

虽然两者可以换用，但也要注意以下几点

• though 可用作副词：

You can count on him, though.

• though可用于as though、even though的短语中
• though用于倒装：

Poor though I am, I can afford it.