Future simple
Future Simple Tense is used to express an action that will occur or happen in the future. It is used to describe an action which will happen in near or far future after being said about it by the speaker.
Signal words
Simple Present
always, sometimes,
every day
1. habits
2. general truths
3. repeated actions or 
4. fixed arrangements 
    (present or future)
1. He smokes.
2. Water freezes at 
    zero degrees.
3. We go to Tsaghkadzor 
     every winter.
4. Your exams start at
Simple Past
last week,
(\(2\) days) ago
a completed action in the past (no connection to the present)
We saw a good film last week.
Simple Future
tomorrow, soon,
next year
in a year
promises and
I'll open the window.
Will you open the window?
I won't open the window.
I think he will help me
There is no future tense in time-clause and if-clause.
After if, when and after we never use future tense.
A present or past tense is used instead.
She will be glad if you go and see her.
We shall have dinner when father comes home.
After she leaves home, she'll meet her friends.
Shall is more formal than will. Will is more common, particularly in modern English
Shall is more common in British English. It’s rarely used in American English
Contracted forms: I will/I shall = I'll
You'll, he'll, she'll, it'll, we'll, they'll