请英语高手帮我点评我的这些英语句子翻译,万分感谢

请英语高手帮我点评我的这些英语句子翻译,万分感谢
1、离婚率上升尽管令人难过,但却是不争的事实.
The increase of divorce rate although make us sad,but it is a undoubted fact.
2、在过去的三十年,发展中国家在许多方面都取得了很大的进步,其中包括健康水平的提高.
In the past thirty years,the development countries have made great progress in many aspects,which include the rise of healthy level.
3、我认为,对于我们来说,更重要的是尽可能提高自己的能力而不是获得更多的证书.
From my point of view,it is the most important that we should try our best to improve our ability rather than getting more certifiicates.
4、对大学生来说,了解校园外的世界是非常必要的.
It is essential for college students to know the world outside.
5、在世界上或许没有什么游戏像赌博那么有害和危险了,它经常会导致一个人破产,还会玷污一个人的心灵.
In our world,maybe not have a game like gamble with harm and danger,which always cause people lose their possessions and it also can stain people's soul.
6、很多同学经常玩电脑游戏,这是浪费时间,而不是一种有益的放松方式.
Many students always play computer games,it will waste time rather than a useful way to relax themselves.
7、令人更迷惑不解的是,很多飞机都从大海上离奇消失了.
To make us more puzzled ,many planes has disappeared strangely on sea.
8、由于周围交通不便利,人们只得步行回家.
Because of the traffic in our surrounding is not convenient,people only can walk to home.
9、全国人民都不遗余力地支持北京举办奥运会.
All of national people will spare no efforts to support Beijing to hold the Olimpic Games.

1 althoug 和but不能连用,时态错了
Although the increase of divorce rate makes us sad, it is an undoubted fact.
2.In the past thirty years,the developing countries have made great progress in many aspects, including the health level.
3.From my point of view, trying our best to improve our ability is more important than getting more certifiicates.
4 可以
5. In our world,maybe no game is as harmful and dangerous as gamble,which always causes people lose their possessions and stains people's soul
6.Many students always play computer games,which wastes time rather than is a useful way to relax.
7 To make us more puzzled ,many planes disappeared strangely over sea.
8 Because he traffic in our surrounding is not convenient,people only can walk home.
9.All of the citizens will spare no efforts to support Beijing to hold the Olimpic Games.