本人英语极差.完全不懂语法,请各位大神指出我作文中语法错误,小弟感激不尽!

本人英语极差.完全不懂语法,请各位大神指出我作文中语法错误,小弟感激不尽!
Huge and frightening,a mouth,including four white tooth,is chasing a teenager who wears a hospital dress.Obviously,the youngster is a sick,but he is running fast.Accordingly,we can informed that he has a healthy body.The picture is a striking morning call to send us a significant information that teenage thought have been in the spotlight in current society.
Among the topic concerning youngster’s thinking,as the depiction show,the most cardinal tip is related to the issue of teenage psychological problems.Several factors could weigh heavily for the mentality of young person,yet,suspended at the top of the list are the following to aspects.First of all,many unconfident teenagers,not achieving success,have a negative attitude which complain everything and avoid all problem of his life.Furthermore,these young people are given severe stress by public opinion.
Actually,this social phenomenon is not so bad.Teenagers can seek the effective measures to improve their psychology.In addition,society should deliver some positive and upward atmosphere to relieve youngster’s press on the shoulder.Only in this way teenagers can adjust their negative mentality and only in this way our society will became more harmonious to live in.

1.tooth 复数为 teeth
2.the youngster is a sick 应为 the youngster is sick 或者是 the youngster is a sick person
3.we can informed 中can为情态动词 inform应为原型
其余...
再问： 嗯嗯嗯 对对对 其余的怎么样T,T 大神 我就靠你了。。。