看一下我写的英语文章,有什么不足之处没.（语法）

题目

看一下我写的英语文章,有什么不足之处没.（语法）
An unforgettable thing
A month ago,it happened in a morning,I can't forget till now.
That morning,I slept too late, and I was so afraid to be late.That made me not have a good mood.I ate breakfast quickly,during that time,my grandmother talked to me ceaselessly,and told me to take care safety,again and again,so I got angry.
"You really are a pain!"I said,then,she didn't say anything.
Till now I still rememberthat thing,how my grandmother loves me!The unforgettable thing made me very regret.

答案

不知道读哪个年级,所以无从知道语法要用到什么程度.我且随便改改吧,
An unforgettable thing
It happened in the morning one month ago,and I have not forgotten it since then.
That morning,I slept too late,and I hate being late because it would make me unhappy.So I had a quick breakfast.And at the time,my grandmother was keeping talking to me.She was trying to comfort me and asked me to take care.And she repeated the words for a million times which really irretated me and I yelled at her,"You re annoying!you really are a pain!" At my word,she said nothing.
I would never forget that thing,and it reminds me how my grandmother loves me!This thing made me feel guity for my careless words which might have hurt my dear grandma and I promise I would never let it happen again.