future with will - form
The simple future tense is very easy to make and is very useful.
In spoken English, emails and personal letters, more often than not 'll is used.
However, in business and other formal texts, the full form will is used.
Here's the positive form (will + infinitive):
I will meet him later (I'll ..)
You will come (you'll ..)
It will rain tomorrow (it'll ..)
She will be late (she'll ..)
He will help us later (he'll ..)
We will get married in September (we'll ..)
They will cook dinner (they'll ..)
Next, here's the negative form (add: not).
In spoken English, emails and personal letters, more often than not won't is used.
However, in business and juridical texts, the full form will not is used.