有语法错误么？

Question

Although we are tired, but we are very happy。

Answer 1

Although we are tired, but we are very happy。
解释：
although和but都是连词（conjunction），
英语的规则是一个复合句用一个连词，用两个则为错。
改法一：Although we are tired, we are very happy.
改法二：We are tired, but we are very happy.
改法三：We are tired. However, we are very happy.（however是副词，不是连词，不能连接俩句子，所以其前面用句号）

注意：英文句号是点，不是圈。

希望能帮到你！

Answer 2

有，英语不同于汉语，although和but不同时用追问

那想表达“虽然辛苦，但我们仍十分开心”用英语这么说？

追答

去掉任意一个就行

Answer 3

去掉although追问

确定对吗？

追答

shouldbe