真是有麻烦到您了!帮我看看我的文章还有要改正的地方吗?

谢谢你又想我提问.喜欢我的答案的话：
My favorite mode of transportation
There are many means of transportation in the world,such as：trains,cars,planes and ships .These ways are convenient and cheap.However I like cycling the most.
Cycling is the world's most common mode of transport.Cycling can help you to keep health① and build muscle.Over-weight people can lose their② weight by cycling.（And it is important that cycling is green and does not pollute the air .）③ When we travel by bike,we can breathe the fresh air,enjoy the beauty of the surroundings,and forget all the④ problems.
Please be slow when riding,avoid traffic accidents,and ensure the safety of life⑤
That's why I like riding a bike*.I ride to school everyday,so I am very fit and healthy
Thank you very much
①不通顺
②”their“有些多余
③太太太不通顺了,真个句子得改
④我们的问题,就要用”our”
⑤不通顺,英语不这么说
⑥用“a bike”,意思是你只喜欢其一辆车,但是你想说的是你喜欢骑车,所以是“bikes”
改为：
My favorite mode of transport 忘说了,“transportation”不可以用,是“transport”
There are many means of transportation in the world,such as：trains,cars,planes and ships .These ways are convenient and cheap.However I like cycling the most.
Cycling is the world's most common mode of transport.Cycling can keep you healthy and build muscle.Over-weight people can lose weight by cycling.The most important thing about cycling,is that it is very environmentally friendly,and will not pollute the air.When we travel by bike,we can breathe the fresh air,enjoy the beauty of the surroundings,and forget all our problems.
Please be slow when riding,avoid traffic accidents,and ensure safety.
That's why I like riding bikes.I ride to school everyday,so I am very fit and healthy.
Thank you very much.
我在澳大利亚住,英语100%没问题.

可以啊，不过呢！用中文读有点不通！我来翻译一下：我最喜欢的运输方式吧
　　有许多的交通方式在世界上,如:火车、汽车、飞机和船只。这些方法方便、便宜。但是我最喜欢骑自行车。
　　骑自行车是世界上最常见的交通工具。骑自行车能帮你保持健康和肌肉。体重超重的人会失去他们的体重骑自行车。它是很重要的,骑自行车是绿色的,不污染空气,当我们骑自行车旅行,我们可以呼吸新鲜的空气,享受美丽的日

看不懂

en

fit 有 healthy 的意思，用一个就可以了
另外，外语和中文不一样，所以多用倒装句比较好
你的
Cycling is the world's most common mode of transport
可以写成 The most common mode of transport in the word is Cycling