I try to learn English, because it's useful and interesting. -> I try to learn English because it's useful and interesting.

This one was perfect except you didn't need the comma in between the two phrases.

I want to be up to day. -> I want to be up to date on things.

The idiom is 'up to date' and you should probably specify what you want to be up to date on otherwise your readers or listeners won't know what you're talking about.

Besides them foreign languages includes a lot of things that catch. -> I'm not too sure what you mean by this so I don't know how to go about correcting it, sorry.

But anyways, good job! ^_^

I don't know what to write about myself so feel free to ask me whatever you wanna know about me. I have msn and skype, too, so we can talk there as well.

Overall, your grammar was pretty much perfect! Just watch out for spacing and punctuation. And at the end, it's a little strange sounding to put 'too' twice so I changed one to something with the same meaning but would sound a little more native. Anyways, good job! ^_^

Pre TOEIC test

Hello, everyone.

Today, I have a pre TOEIC test.

I think I'm not ready yet. But I must to know my current status. -> I don't think I'm ready yet but I need to know my current level in English.

Current status is not grammatically wrong but I think it's better to use 'level' when you're speaking about languages and where you're at.

It's really nervous cause, I'm really busy in recently. -> I'm really nervous because I've been really busy recently.

Since you're speaking about yourself, you should use 'I' instead of 'it' because you're not an animal or object. XD

Grammar or Vocabulary, what is the first thing, If you're not good English? -> Grammar or vocabulary? What is (the first thing you should learn/more important) if you're not good at English?

Since 'first thing' is really vague and it makes people question 'first thing for what?', I thought it would be better to make things a little more specific!

Anyways, keep up the good work and have fun learning English! ^_^

I am very strong want know english, but difficult it is given...... -> I really want to (know/learn) English but it is really difficult.

It was hard trying to figure out what you wanted to say but I did the best I could! And I can't speak Russian so I can't ask for the original statement to help you translate, either, sorry. >_<

What a fine day it is!

Today is a fine day!

When I got up in the morning, the weather is rainy. -> When I got up in the morning, the weather was rainy

You specified that you got up in the morning which is past tense so you should follow through and make the rest of your sentence past tense, as well.

So my mood is also bule. -> So my mood was also blue.

This followed what I mentioned before. Since your mood is not blue anymore, you should use the past tense so people now that you are not blue anymore~

But ,when in the afternoon,the sun rose up and the sky is bule ,the birds are singing.So I am very happy . -> But in the afternoon, the sun rose up, the sky turned blue and birds started singing so now I am very happy.

Again, just remember the past tense~ And using 'now' means that before you weren't happy because you were blue but now you are happy because of those things that happened.

I think it is a fine day !

I agree with 할아버지! You did a good job! There wasn't that many mistakes in your notebook entry! Keep up the good work and have fun learning English! =)

well,i'm an undergraduate. -> Well, first of all, I'm an undergraduate student.

When you use 'well', it kind of has a nuance of you answering a question hesitatingly or you are answering something or responding to something hesitatingly. If you start out with 'well' when you're just speaking, it's better to stick on a 'first' or 'starting out' or something to tell your readers that you're going to be speaking to them.

i'm lemon,from hebei province ,north of the China. -> I'm Lemon from the Hebei province in northern China.

i came to wuhan to study for almost four years. -> I came to Wuhan to study and have been here for almost four years now.

This was a little hard for me to try to keep it the same as you wanted it. If you mean that you go to Wuhan everyday from here you live then you can say 'I've gone to Wuhan to study for almost four years' but if you moved there then my suggestion is better. Your tenses don't really agree.

i'm that kind of person who is optimistic,aggressive and diligent girl . -> I'm the kind of (person/girl) who is optimistic, agressive and diligent.

Using 'who is blahblah' means that you are already describing a noun that came before 'who' so adding girl at the end just has two nouns for one adjective. So instead you can just use person or girl (whatever you wish) in the front.

English is my favourite,since i was a junior student ,i just loved it. -> English has been my favorite since I was a junior in high school. I just love it.

I assume junior student = junior in high school because you said you're an undergraduate which implies college. Also, using 'loved' means that you don't anymore but I think that you still do. XD

But, I still have many weaknesses like speaking,vocabulary,and so on. -> But I still have many weaknesses like speaking, vocabulary, and so on.

so,i wish that i can make friends and learn more in order to improve myself.thanks. -> So I wish that I can make friends and learn more about English in order to improve myself. Thanks.

I'm not sure if you meant learn more about things in general or just learn more about English but I assumed it would be about English since it is an entry about English. But you know what they say when you assume...

Anyways, you did a good job! Have fun learning English! =)