请英语高手们帮我点评一下我的这篇英语四级作文（语法、用词或者其他）万分感谢

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In the past years ,the disposable plastic bags were (was) used by people (to person) extensively, especially those (people) who buy(ing) things in
supermarket.There are many problems with disposable plastic bags being (was)
thrown away everywhere ,(and it will cause) thus causing the White Pollution
.And secondly ,plastic bags are not easy to decompose ,so they (it) will remain (leave) in our land a long time and pollute our groundwater.Lastly
,some people always choose to burn the disposable plastic bags when they have too (it is) many (1).

As the plastic bags created (takes) more and more problems,our government
made(make) a law to limit the use of disposable plastic bags(2).As far as
I am concerned (For my part), I think the action can bring (take) many benefits
to people (person) .To begin with ,it will reduce the production (product)
of disposable plastic bags and as the price increases (increased),people
will control their desire of using them (use it).In addition ,it can protect
better both our environment (better) and (ensure) our health.In short (a word),it is a beneficial thing that it can make our life better.

(1)或when there are too many.
(2)时态不清楚,政府通过法例了吗?还是计划这样做?
如果还未能
As the plastic bags have created more and more problems,our government
will pass a law to limit the use of disposable plastic bags.

plastic bags was thrown away everywhere ,and it will cause the White Pollution 前面是过去时，后面也应该主从一致使用过去式。
And secondly 这个and应该去掉。因为secondly已经起到了连词的作用
it will leave in our land a long time ==== it will be left in the earth for a long time
when it is many ====when there are too many bags
our government make a law ==== our government makes the law
take many benefits 用 make 好一点
.In a word 一般这个后面真的就是一个词，所以改成To sum up

was used 应改为has been used to .buying应改为buy。本篇出现较多的语法错误，主要是定语从句时态以及一些固定用法出错如make many benifits

段落可以分三到四段，还有尽量用例如，first,second,等序列话，或者用能让阅卷老师很快很清楚看出你的观点的方式。可以背些通俗的谚语，在问前或文末来上一句，会给你的作文添上一个亮点！！！这是我的个人观点哈！！！！一起努力！！！