你好!although英[?:l?e?u]美[?l?eo]conj.虽然;尽管;但是;然而;[例句]Althoughheisknowntoonlyafew,hisreputationamongthemisverygreat虽然知道他的人不多，但他在这些人中名声却很响。
although是连词，译为虽然，不能作定语，具体内容如下。
定语是用来修饰、限定、说明名词或代词的品质与特征的。主要有形容词，此外还有名词、代词、数词、介词短语、动词不定式（短语）、分词、定语从句或相当于形容词的词、短语或句子都可以作定语。汉语中常用‘……的’表示。定语和中心语之间是修饰和被修饰、限制和被限制的关系。在汉语中，中心语与定语二者之间有的需要用结构助词“的”，有的不需要，有的可要可不要。
although较正式，语气强；though较常用。现代英语中两者可随意换用。如：
Though he was tired, he went on working. =Although he was tired, he went on working.
although和though引导的从句放在主句前后均可，有时还可放在句中。如：
He often helps me with my English (al)though he is quite busy. 尽管他相当忙，但是还常常帮我学英语。
Although many difficulties are still ahead, we are determined to make greater achievements. 尽管在前面的道路上还有许多困难，但是，我们决心要取得更大的成就。
although/though引导的从句不能与but/however连用，但可与yet/still连用。不能说：Though he was old, but he worked hard. 应把but去掉。当然，保留but而去Though也可。
though有时指假设的情况，不指事实，从句用虚拟语气；although不能这样用。如：
Einstein cared little for money, though he could have been very rich. 尽管爱因斯坦本可以成为非常富有的人，但他对金钱却不感兴趣。(though引导的情况是假设的而不是事实）
He will never do such a thing though he (should) be forced to. 即使强迫他，他也决不会干这样的事。（注意：不能用is）
though引导的从句，可用倒装语序，即把从句中的表语或状语放到though之前；although却不能这样用。如：
Young though she is, yet she is fit for the job. （=Young as she is, yet she is fit for the job.）尽管她很年轻，可她还是胜任这项工作的。
though从句的主谓语若是系表结构时，可以省略从句主语和be动词。如：
Though alone, he is happy. 虽然他独自一人，却很幸福。
注意：Though loving him, I can not help him. 是错句。因为从句不是be构成的系表结构作谓语。应改为：Though I love him, I can not help him. 或 Though fond of him, I can not help him.
though还可与别的词结合使用，如even though, as though等；although则无这种搭配功能。如：
I'll go and help them even though I stop my work. 即使我停下自己的活不干，我也要去帮助他们。
though还可作并列连词，相当于and yet（然而，可是），它引导的分句常对另一分句起补充说明作用；although则无这种用法。如：
I wouldn't like to go to the evening, though they will invite me to. 我不想去参加晚会，可是他们要请我去。
They now can do most of the things people can do, though most scientists agree that computers can not completely take the place of humans. 人们能做的大部分工作，计算机现在都能做，然而大多数科学家认为，计算机并不能完全代替人类。
though可用作副词，放在词尾。although却不可这样用。如：
He said he would come, he didn't, though. 他说要来却没来。
区别如下：
一、词性方面
although只能作连词，though不仅可以作连词，而且还可以作副词，含义是“不过，然而”。
例句1：Although/Though he is young,he looks very old.(虽然他年纪很小，但是看起来很老。)
句子中although或though作从属连词，引导让步状语从句。
例句2:He had a fight with her yesterday.They are still good friends now,though.(昨天晚上他和她打了一架，不过他们现在仍然是好朋友。)
在这个句子中，though是副词。
二、用法方面
1、although所引导的让步状语从句一般用陈述语气，从句所说的内容常指事实，而不指假想；而though所引导的从句却可以用来表示假设或推测，从句既可以用陈述语气，也可以用虚拟语气。
例句1：Although the box is very small,it is really useful.(尽管这个箱子很小，但它真的非常有用。)
在这里although引导的从句陈述的是事实而非假设。
例句2：Help her though she may refuse.(帮帮她吧，即使她可能拒绝。)
在这里though引导的从句用来表示假设或推测。
2、although常用于正式文体中，不能和even、as连用；though常用于口语和非正式文体中，可以和even、as连用。
例句1：He won't go there,even though the library is not far.(虽然图书馆不远，但他不会去那里。)
例句2：It looks as though she has gone home.(看起来好像她回家了。)
3、although引导的状语从句不能使用倒装形式；though引导的状语从句位于句首时，既可以使用倒装形式，也可以用正常语序。
例句1：Although/Though he is poor,he is very happy.(尽管他很穷，可是他很快乐。)
这里although/though引导的让步状语从句采用正常语序，此时although和though可以互相替换。
例句2：Poor though he is,he is very happy.(尽管他很穷，可是他很快乐。)
在这里，though引导的让步状语从句Poor though he is采用了倒装语序，此时就不能用although来代替though。