although

although but不能连用。按英语语法，although为从属连词，用以引导让步状语从句，它表明整个句子为复合句；而but为从属连词，用以引导让步状语从句，它表明整个句子为复合句，所以不能连用。

Although的例句Although he was only grumbling，his choice of words made Rodney angry（尽管他只是在咕哝，可是他的`措词却让罗德妮恼火）；but的例句For what do we live，but to make sport for our neighbours，and laugh at them in our turn（我们活着是为了什么？不就是给邻居当笑柄，再反过来笑他们。）