改下语法错误Although they have the same purpose,but they have own different feature

去掉 but
Although they have the same purpose,they have own different feature.

去although 或去but

although和but不能放在同一个句子中, 去掉其中之一
Although they have the same purpose, they have own different feature.（让步状语从句）
They have the same purpose, but they have own different feature.（ 并列句）

这句话有三处毛病。更改如下：
（1）去掉but
（2）own前边加their
（3）feature加s，变为复数。

Although和but不能出现在一块！虽然翻译合乎汉语意思但是英文语法是错的！去点although或but

1、although和but不能同时出现在一个让步状语从句中，所以两者取其一。
2、own different feature句意矛盾。应该去掉own。同时，应该将feature 改为features。

Although they have the same purpose, they have their own different features

再让步状语从句中，although与but不可连用,所以你应当去掉but 或去掉although，但也可以将but改成yet,或改成 they still have own different feature

1、去掉but
2、去掉own或different
3、feature后加s

（1）去掉Although 或者去掉but
（2）own前边加their
（3）feature加s，变为复数

参考NewMarryDecade

in my opinion:
先去掉but
own前加their
different 相对于own多余
feature应该是可数的吧 ，好像是特色的意思

改成：Although they have the same purpose, they have each different feature. 你读一下就知道对不对了。
别吝啬赏金哟呵呵。

Although 和 but不能连用，不能同时出现在一个句子中