My Common Miatakes

1.-  My Mistake was writing "people is" and should be "people are" because " is" is  for singular and "are"  for plural.

ex 1.-  Those rings are very expensive.
ex 2.-  My classmates are very generous and polite.

2.- I have problems with the use of will-future.

will-future - Use

The will-future is one future tense. There are other future tenses, like the going to-future, the Present Progressive, the Future Progressive/Continuous and the Simple Present.
We use the will-future:

1) Future actions happen without the speaker's intention (birthday, weather, etc.)

The sun will shine tomorrow.
Peter will be 15 next Tuesday.

2) Predictions, assumptions (I think, I hope, I'm sure, I'm afraid)

I think Sue will arrive in Paris at 6 pm.

3) Spontaneous actions (not planned)

Hang on! I'll have a word with you.

link: http://www.englisch-hilfen.de/en/grammar/will_future_use.htm

3.-   I have problems expressing and requesting opinions

Ways to ask for opinions

Do you think...?
What do you think about...?

What's your opinion of...?

How do you feel about...?

examples:

Do you think i´m a good person?

How do you feel about your brother´s marriage?

Expressions to give opinions

I think...
I feel...

I don't think

In my opinion,...

If you ask me,...

Examples:

In my opinion, you are a very good player.

I think you should train more.

Link: http://www.topics-mag.com/language/give-opinions.html

4.- Sometimes I have problems reading instructions before writing.

1. Pre-reading

   • Preview structure of text
   • Examine assumptions about topic and author
   • Make predictions
   
   

2. Reading

   • Actively reading the text
   • Asking questions
   • Annotating and note taking
   
   

3. Rereading/Prewriting

   • Reviewing the text with the assignment in mind
   • Locating material in text that might help write the paper
   
   

4. Prewriting

   • Organizing material for the paper
   • Analyzing the rhetorical situation of the assignment (audience, purpose, intention)
   
   

5. Drafting

   • Writing the first draft of the paper
   • Making decisions about content, structure, and language
   
   

6. Rewriting

   • Reviewing and revising the paper
   • Proofreading the paper
   • Checking paper against source texts for accuracy, correctness, and fairness

link: http://academic.udayton.edu/crc/faculty/ReadingWritingProcess.htm

5.- Determiners 

what is a determiner?

The determiner is an important noun modifier which contextualizes a noun, often in terms of quantity and possession. Determiners in English precede a noun phrase and include demonstratives, possessives, and quantifiers.

examples:

- this is my new laptop

-Those kids are bothering me.