呢篇野既文法有冇錯？急急急急急１５：４０前一定要答到

Very good, only a few changes will make it perfect.

1. The reason why I have decided to show everyone this

2. Actually you are right about this black thing being simple and old, it is not even a digit one.
or
about this simple and old black thing (black thing should go together, simple and old to describe it)

3. It is simply because it was given as a gift to my family and me. (remove given as)

4. Every time when I look at it (Remove when. Every time is the same as when)

5. Although, it just looks like a cheap device (Remove the comma)


Today I have to show all of you something. The reason why I have decided to show everyone this is that it means a great deal to me. It is a camera. You people may say it is just an old camera. Actually you are right about this black thing being simple and old, it is not even a digital one.
Are you wondering why I am still showing you this? Why?
It is simply because it was a gift to my family and me.
My uncle was the one who gave us this. Unfortunately this kind man who used to care about me so much passed away three years ago. This old camera was the only thing he left us. Every time I look at it, I think about how he used to care about me and take good care of me.
Although it just looks like a cheap device, I will cherish it for it brings back the precious moments.