(1) 作为连词，这两个词常可以换用。

• They are a nice family, although/though I don't like young Sandra much.
  他们是一个很好的家庭，虽然我不是很喜欢年轻的桑德拉。

 (2) 但两者也有不同：though在日常口语或不太正式的写作中更常用，可作连词和副词用；although只可用作连词，可用于各种场合。

• Although the murder of the Archduke was the immediate cause of the First World War, the real reasons for the conflict were very much more complicated.
  虽然谋杀大公爵是爆发第一次世界大战的直接原因，但这场冲突的真正原因却要复杂得多。
• I'd quite like to go out, although/though it is a bit late.
  我很想出去，虽然有点晚了。
• You can count on him, though.
  你倒是可以信赖他。
• It seems to me though that he is running a serious risk in doing a thing like this.
  在我看来他做这样一件事情倒是在冒极大的风险。

 (3) though常可与even或as连用(even though, as though) 进行强调，although则不可。

• Even though I didn't understand a word, I kept smiling.
  虽然一个词也不懂，我还是不停地笑着。
• Davy and my father acted as though nothing had happened.
  戴维和我父亲表现得好像什么也没发生似的。

 (4) though可用来引起部分倒装的让步状语从句，although则不可。

• Exhausted though she was, there was no hope of her being able to sleep.
  虽然她疲惫不堪，可她还是不能够入睡。

 (5) though作副词，可以放在句末，意为“然而，不过，可是”。

• It was a quiet party; I had a good time, though.
  这是一场平静的聚会，不过，我还是玩得很愉快。

 (6) 在较长的句子中，though也可放在其他位置。

• The strongest argument, though, is Britain's economic and political dependence on the United States.
  但是最有力的论据是英国在经济和政治上对于美国的依赖。

 (7) though, although连接的两个短句，不能再用but。如不能说： Though she was not very well, but she went to work. (though和 but两者应去一个。)但如有三个短句，则可以。这原则就是：连接两个短句，只需一个连词，而两个连词可以用来连接三个短句。

• Although she was not very well, she went to work, but she didn't stay there long. 虽然她身体欠佳，她还是去上班了，但她在那里没待多长时间。