哪位英语高手帮我看下有没有语法错误（急）

最明显的错误：
第二段开头：To them surprised, 应改成：To their surprise
第二段：has slow 改成：is slow
另外，时态感觉用过去时更好一些。如果不用过去时，第二段倒数第二句 And join the war in Vietnam 应改成：And joins the war in Vietnam
事实上，越战发生在过去，所以，用过去时更妥当。

The world will never be the same once you (see) it through the eyes of Forrest Gump. Forrest Gump was born in a small town in Alabama in the USA. He only has an IQ of 75. His mother and his friend Jenny always encourage him to live as an ordinary person.
To (their) surprised, Forrest has (well developed body with simple mind). His dramatic life begins when he runs onto a football field to escape his class bullies. He becomes a football star in a university.
After his graduation, he becomes a soldier, (and joins) the war in Vietnam. After the war, he meets many famous people.
The movie is over, but I know that it won’t be over in everybody’s heart.
A loving and friendly dunce can also conquer the world.
不妥之处，已改，并用“（）”标出。

my
english
name
is
stacey
去掉
english，
因为你正在写英文作文，
不用再强调
the
meaning
of
the
name
is
to
cheer
up
the
name
用
it
代替
it
makes
me
feel
excited.
原因呢？
i
don't
have
a
good
grade
in
the
examination
for
high
school
这句很糟，考试不可能只有一次，
请重写，
注意时态，单复数
i
was
very
upset.
but
i’m
stacey.
连在一起，
i
know
it's
time
to
cheer
me
up.
know改成understand
，
写清楚
cheer
up
with
what
so
when
i
was
depressed,
i
will
tell
myself,i
am
stacey,
i'm
not
afraid
不明白为什么用过去式，
后面的三个分句必须填上适当的连词或代词，
不然是错句

The world will never be the same once you have seen it through the eyes of Forrest Gump. Forrest Gump was born in a small town in Alabama in the USA. He only has an IQ of 75. His mother and his friend Jenny always encourage him to live as an ordinary person.
To their surprise, Forrest is “slow” in head but “quick” in running. His dramatic life begins when he runs onto a football field to escape his class bullies. He becomes a football star in the university.
After his graduation, he becomes a soldier. And join in the war in Vietnam. After the war, he meets many famous people.
The movie is over, but I know that it won’t be over in everybody’s heart.
A loving and friendly dunce can also conquer the world.