although作连词，意思是虽然;尽管;即使;不过;然而。although引导的从句放在主句前后均可，有时还可放在句中。although引导的从句不能与but、however连用，但可与yet、still连用。
although的用法
1.although较正式，语气强
Although he was tired, he went on working.
2.although引导的从句放在主句前后均可，有时还可放在句中。
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。
He often helps me with my English although he is quite busy.尽管他相当忙，但是还常常帮我学英语。
3.although引导的从句不能与but, however连用，但可与yet, still连用。
不能说：Although he was old, but he worked hard. 应把but去掉。当然，保留but而去Although也可。
注意:although 的几不:
although不能指假设的情况
although不能作并列连词
although不能作副词，放在词尾
although有什么用法
1.表示对比，“虽然”。
eg: Although he is not smart, he works harder than his classmates.
虽然他不聪明，但他比他的同学都要用功。
2. 表示惊奇或出乎意料，“虽然”。
eg: He can do most of the housework, although he is only five years old.
虽然他才五岁，他会做大部分家务活。
3. 表示让步，“尽管，即使”。
eg: My father is still working outside, although it is very hot.
尽管天气很热，我的爸爸还在外面劳作。
4.表示转折，“不过;然而”。
eg: I didn’t agree with him, although I didn’t speak out my opinion at once.
我不同意他的看法，不过我并没有马上说出我的想法。
