王琼、徐达山主编的《当代英语惯用法词典》(北京科学技术出版社,2004,P51): 6. although和though用作连接词时都不能和but连用, 但可和yet, still, nevertheless 等连用。 《柯林斯高级英语用法词典》(杨世强等翻译,上海外语教育出版社,2007,P64):警告:although和though引导从句时,不能和but或yet引导的主句连用。误:Although he was late,yet he stopped to buy a sandwich.正:Although he was late,he stopped to buy a sandwich. 很纠结哦,但我觉得外国人一般不会这样用的,最好别用