英语中用了although(though)，就不能用but，但可以用yet，表示“虽然...但是...”。
although和yet的用法
yet在这里是副词,与although(though)连用时yet没有问题：
Though she was busy with her work, yet she managed to find time to stay with her family
虽然她忙于工作,但她还是挤出时间与家人在一起.
She was busy with her work ,and yet she managed to find time to stay with her family(这里是副词,and yet ==but )
She was busy with her work , yet she managed to find time to stay with her family（这里是连接词,解释为：虽然- - -,但是 -- -==but ）
although和yet介绍
一、although
读音：英 [l] 美 [lo]
释义：虽然，尽管。
语法：although的基本意思是“尽管，虽然”或“然而，但是”，常用于引导陈述语气的让步状语从句，且引导的句子常指事实，而不指设想。
二、yet
读音：英 [jet] 美 [jet]
释义：但是，然而。
语法：yet用于否定句和疑问句中及用于表示怀疑的动词之后，意思是“还，尚，仍然，直至现在”，在英式英语中通常用于现在或过去完成时，在美式英语中通常用于一般过去时。
