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一、用作连词
表示虽然，两者大致同义，可换用，只是 although 比 though 更为正式：
Though [Although] it was raining，we went there. 虽然下着雨，但我们还是去了那儿。
Though [Although] it was barely four oclock, the lights were already on. 尽管才四点钟，灯已经亮了。
Though [Although] we are poor, we are still happy. 我们虽然穷，仍然很快活。
二、用作副词
although 一般不用作副词，而 though 可用作副词，且一般放在句末(不放在句首)，意为可是、不过：
Its hard work; I enjoy it though. 工作很辛苦，可是我乐意干。
He is looking fit, though. 但他看起来很健康。
You can count on him, though. 不过你可以指靠他。
三、用于习语
在 as though(好像，仿佛)，even though(即使，纵然)等固定短语中不能用 although：
She closed her eyes as though she were tired. 她闭上眼，仿佛很疲劳似的。
We felt as though we had witnessed the whole thing. 我们感到仿佛目击了整个这件事似的。
He is an honest man, I must say, even though I have opposed him. 尽管我反对过他，我还得说他是一个诚实的人。
She was always afraid of men, even though she had lots of boyfriends. 尽管她有很多男朋友，她总是害怕男人。
四、用于倒装
though 引导的让步状语从句可用部分倒装的形式(注意：倒装后位于句首的名词之前不用冠词)，但 although 一般不这样用：
Poor though I am, I can afford it. 我虽穷，但这东西还是买得起的。
Child though he was, he did quite well. 他虽是孩子，但干得很好。