I need a English airticle is about a unforgettable thing.Who can help me?Thank you very much!把English前的a改为an,低级错误,打击我.....

你是要篇章 (article) 还是文章 (essay)?
An unforgettable thing 或许能改成 An unforgettable experience (经历)?
An unforgettable experience
It was a perfect day for fishing.The weather was sunny and the sky was nicely decorated with beautiful clouds and chirpy birds.It presented a sense of vibrancy and energy to us.I sat beside my friend,John,waiting impatiently for a fish to tug at my fishing rod.
After twenty impatient minutes,something tugged at my rod.An enormous tortoise floated onto the surface of the water with its neck entangled with my fishing line.It tugged at my fishing line so hard that I fell into the river with my rod.The strong tortoise pulled my rod away.I bobbed up and down in the water gasping for air.
John,who was a strong and great swimmer,promptly jumped into the river without any hesitation and pulled me up.I was thankful and I repaid his kindness by giving him a fish I caught earlier.
This was greatly an unforgettable experience and vowed never to go fishing again.