Although
Although is a conjunction. It is used for introducing a statement that makes your main statement seem surprising.
Although是连词，用在当主要陈述显得出乎意料时。
Although Jane was the most deserving candidate, she didn’t get the job.
虽然简是最佳的候选人，但她没有得到那份工作。
Although she is rich and famous, she is not happy.
虽然她有钱又有名，但她并不快乐。
The soldiers fought bravely, and although they were badly wounded, they refused to surrender.
士兵们英勇作战，虽然受了重伤，但他们拒绝投降。
Though and even though
Though and although are interchangeable. Though is more common.
Though和although是可互换的。Tough更常见一点。
Though she was poor she would never ask for help.
虽然她很穷，但她从不寻求帮助。
Though difficult, the journey was not dangerous.
虽然旅途艰难，但并不危险。
Even though is more emphatic than though and although.
Even though比though和although程度更深。
The soldiers went on fighting even though they were badly injured.
尽管士兵们受了重伤，他们还是继续战斗。
Though, although和even Though是从属连词。它们引入了一个需要附加到独立分句上的从属子句。
当这些从属连词引导的从句出现在句首时，我们通常用逗号分隔它们。注意，如果分句很短，逗号可以省略。
并列连词but能表达相同的意思。
The soldiers were badly injured but they went on fighting.
士兵们受了重伤，但他们还是继续战斗。
She was poor but she would never ask for help.
她很穷，但她从不寻求帮助。
同样的意思也可以用过渡副词however, nevertheless和nonetheless来表达。
They were badly injured; nevertheless, they went on fighting.
他们受了重伤;尽管如此，他们还是继续战斗。
Jane was the most deserving candidate; however, she didn’t get the job.
简是最有资格的候选人;然而，她没有得到那份工作。
It was a difficult race; nonetheless, over 1,000 runners participated.
这是一场艰难的比赛;尽管如此，还是有超过1000名跑步者参加了比赛。
注意标点符号。过渡副词不连接两个从句;它们只是为了意思的连贯。
过渡副词前应加句号或分号。后面应该加逗号。