一、用作连词不同
表示“虽然”,两者大致同义,可换用,只是 although 比 though 更为正式:
Though [Although] we are poor, we are still happy.
我们虽然穷,仍然很快活。
二、用作副词不同
although 一般不用作副词,一般放句首。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”:
You can count on him, though.
不过你可以指靠他。
三、用于习语不同
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。