这里有一篇我自己写的初中英语作文，请高手帮忙批改一下。一些语法错误指出来，还可以加些优美语句，谢谢！

I don't like studying and I think nobody likes studying at school. ( at school比in school更常见，因为school不是一个大地点，所以用at。如果是一个大地点，例如一个城市，我们说in)
However, if I don't study, I won't have a good mark. (写作时，however比but更为正式。But更偏向口语）
I must study very hard, although I don't like it.
Sometimes I want to have some fun, so I don't study hard. （中文说“有时我想玩”，但是英文却不是用Play来解释的，英语里说have fun.如果说i want to have fun,就是我想要找点乐趣，也就近乎与“玩”了）
My parents are a bit worried about me, and they always urge me, "Don't watch TV and don't go online! You must study!" (这里你也可以说they always say to me, 不过我觉得Urge是“劝”，可能更有那种你想表达的意思）
I appreciate that they help me so much（thank是一个动词(有时也做名词），所以应该是i thank...he thanks，不过即使你用了i thank them,这种表达也是几乎没人说的。有一种可以是，i thank them for helping me so much.但是我觉得thank them，听起来多多少少别扭。所以你可以用一个更高级的词，appreciate,感激。还有一个问题就是，they help me more.如果前面你有提到他们帮主你什么，你可以说more，这里只要说很多就可以了。)
They love me, I know.
I always talk to myself, (跟谁说话的时候，可以说talk to someone,talk with someone，但是talk with someone是和一个人说话，当你想表达“对自己说”的时候=talk to myself) and promise myself that i must do well. (不要前面用现代时，后面用过去时。前面说talk to myself,又说say to myself太过重复。所以换成Promise）
But I can't stick to my promise for many days or even months.
Maybe this is why I don't usually get a good mark.
（it's about why...如果你换成this is why...强调性会更强）
(写好作文的一个因素就是，一个词不要一直重复着用。你可以换换别的词。你这里用了很多的always,其实代替always的，还有often,usually,frequently等等。你可以换一换。一种意思用很多方法说，才可以避免重复）

I don't enjoy studying and I don't think others in my school do. But if I don't work hard enough, I won't be able to chieve a good mark. Therefore I have to convence myself that I must study very hard, although I don't enjoy it very much at the moment.
In many cases I just enjoy too much playing game and I don't have enough time to do my course work. My parents have kept warning me and saying, "Don't watch TV and don't go online! You have to do your school work!" I can understand their feeling and I have gratitude to them as they have helped so much in my life. They love me so much that they would like to help me in whatever way, which I appreciate a lot.
I always talk to myself "you must do ......", however I can forget what I have said quickly. Without firm determination is perhaps the reason that I cannot get good results.

你可以投给英语辅导报的编辑部，他们有专业的老师来批改。O(∩_∩)O

I thanks them? 还有"you must do ......" But I always don't do for many days这个里面的两个do是不是给个明确的动词会好点，确实好像很不优美，这点我帮不上忙

I thanks them who help me more. 句式太简单，没得改