请英语高手帮我点评我的英语四级作文（语法,用词）非常感谢

请英语高手帮我点评我的英语四级作文（语法,用词）非常感谢
1：越来越多的博物馆免费对外开放的目的是什么?
2：也会带来一些问题
3：你的看法
Free Admission to Museums
Nowadays ,more and more museums are opened freely.It have a purpose that let more people ,especially the students visit those cultural relics and know the development of society.It is a beneficial activity.
Though free admission have positive aspects ,it still have negative aspects .As more and more people go to the museums for visiting ,it will lead to the order in mess,and people will not visit the relics normally.In addition ,the public environment is a serious problem ,a part of visitors always throw away the plastic bottles and papers everywhere .So many workers who work in the museums think that the museums shouldn't opened freely.
For my part,just as the coin has two sides ,we should admit the advantages of free admission ,and also should know the disadvantages.I think the museum should open freely ,but it can limit the quantity of people every day.In a word,the people who visiting in the museums should protect the environment of the museums consciously.