Question

nesecito oraciones de simple futuro con will

Answer 1

WILL

We form the will-future with the auxiliary will and the infinitive of the verb. We use the the same form of the verb every time regardless the subject.

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.

STRUCTURE:
Affirmative sentences:
Example:
He will play football. NOTE: short/contracted form in the will-future:
He'll play football.

Negative Senteces:
Example:
He will not play football. NOTE: short/contracted forms in the will-future:
He won't play football. or
He'll not play football.

Questions:
Example:
Will he play football?


EXAMPLES:
I will write down your name and address.
Tom will have breakfast early tomorrow.
I don't know when Tom will leave Japan.
I doubt that Tom will get here on time.
Suzy hopes that Tom will ask her out.
I expect that Tom will pass the exam.
He will accept any money he can get.
The results will be back in a week.
That will save me a lot of trouble.
She will come even if she is tired.
I think he will be glad to see you.
I hope that you will get well soon.
I have an idea she will come today.
I don't know what plan he will try.
I am doubtful whether he will come.
I am afraid he will make a mistake.
He will get nowhere with his plans.
He will be contacting you directly.

Answer 2

Ann will finish this later.
I will call you back.
This will be very easy.
They will catch you if you stay.
We will go there the day after tomorrow.
You will get lost in the city.
I will take the stand.
I will clean the mess.
She will give it to you.
He will be nice at you
I will make you a promise.

Si ves que usaste mucho el "I" puedes cambiarlo por otros pronombres como "She, He, They, We" etc.. 
También si usas el pronombre "I" puedes escribir "I'll" en lugar de "I will" :)