谁能帮我看看这里面有没有语法错误啊

题目

谁能帮我看看这里面有没有语法错误啊
Hello, everyone.
I am honored to speak here, I share with you my topic is very happy.
First of all, please allow me to introduce myself to you. I'm Zhang Jingyu. I am a middle school student. Today my speech is about environmental protection.
I first talk about the world of my dreams! When I grow up, I always dreamed of. I live in a beautiful country. There are many trees and flowers in our city. We could hear the birds singing. The streets are clean, the air was filled with the fragrance of flowers! It is so beautiful! But for me it was just a dream! I hope it will come true! So I think we should do something to protect our environment.
Everyone should make a contribution to protect environment. Taking care of our environment is very important.
We can start from every little bit of material, such as afforestation, take good care of every tree and bush, not to hunt small animal, pick up the trash." Not good for small, not to small to do this evil ", begin from me, starts from the minor matter, starts from the side, from now on. In order to protect our mother earth.
Thank you for listening, all this.

答案

I always dreamed of. I live in a beautiful country. There are many trees and flowers in our city. We could hear the birds singing. 本句中live可不可以改为lived. There are 可不可以改为There were.文章...