I am learning English because I wanna want to study abroad in someday, maybe in the U.S. or one of the european countries. I wanna  want to make friends with anybody whose native language is English. Aha, my native language is Chinese and I grew up in mainland of China.
I enjoy reading books ,listenning to music and playing table tennis. In my spare time I'd like to play computer games with net my online friends. I (am a master now) have a master's degree(?) and majoring in the field of materials. Nice to meet you guys. Those who wanna learn about Chinese culture,I would like to communicate with you.

1. wanna - very casual word, it's okay to say it like this in conversation, but when writing something, it's not appropriate.

2. Always start sentences with a capital.

3. Although "In my spare time I'd like to play computer games..." is correct, I didn't think it was what you meant. I'd = I would. In this case it would mean you haven't played computer games before, but would like to in the future.

As is clearly illustrated in the picture, due to speedy social and economic development, the number of something has dramatically increased\decreased.(describe picture). At the bottom (in this lower area, as can be seen here - assuming you are pointing at the picture) ,we can see several Chinese characters which translate to…
The purpose of the/this picture is to show us that due attention has/must to be paid to … .Owing to … , …..(describe picture )If we let this situation remain unchecked (If we don't attempt to change the status quo),we don’t know where….will be in the forthcoming (<-tautology) future.By that time,it would be/result in a tragedy of immeasurable proportions.

Accordingly,in my opinion,Confronted with the problem, I propose we should find several solutions immediately. Firstly, we should appeal to the authorities to make/enact strict laws and regulations to control … ;Secondly, we should cultivate the/public awareness that…is/will be vital to us the cause/achieving ""/furtherance of a goal.As a consequence of successful publicity and unwavering government support,I reckon believe that we humans humanity can surmount/overcome this difficulty and a brilliant future is awaiting for us if we exert every effort to it.

Actually the entire last sentence should rephrased.(this one isn't perfect either though)

As a result of our successful public awareness campaign and unwavering government support, I believe that, if we exert every possible effort, humanity can overcome this hurdle and and create a brilliant future.

Hopes this helps or gives you some ideas. Good luck with your presentation if you're doing one.

First notebook entry: Introducing myself

Hi everybody. My english name is Lily. I've come to this place Coming this place, because I want to make friends with people from different countries people and study languages. Chinese is my nature native language and I can speak english too. But I still also want to study Japanese. Oh, I forget to say mention I am an accountant.

Welcome my friends!

Hihi! Welcome.

You need a space after each punctuation mark, be it a full stop or comma.

It is not "a" accountant, because accountant starts with a vowel sound, you need to use "an".

examples - A person. A rabbit. A tiger.A boy. A girl.

An elephant. An apple. An unspeakable act. An idiot. An office.