问题描述: Although he is very old,( )he works very hard 中能不能填but 1个回答 分类:英语 2014-11-08 问题解答: 我来补答 不能,两者是虽然,但是的意思,但一句话里不可以同时出现although……,…………,but……上面这句话也可以写成He is very old,but he works very hard . 展开全文阅读