Will and Be Going To

Will

Definition:
Will is a verbal time of future.

Use:
We use Will when we say to do something in the moment that speak, when do promises, offers and when we say a prediction.
The future with Will is the same form in singular and plural.

Positive form:
Its form is --> subject+Will+ infinitive verb.
ex:
I Will play tennis.
we Will travel to London on holiday.

Negative form:
Its add won't. subject+ Won't+ infinitive verb.
ex:
I won't play tennis.
we won't travel to London on holiday.

Interrogative form:
we put Will ahead of the subject. Will+subject+infinitive verb.
The small answers are with the subject+will or won't, It depends of they are affirmative or negative.
ex:
Will I play tennis? no I won't
Will we travel to London on holiday? yes, we Will


Be Going To

Definition:
Be Going to is a verbal time of future.

Use:
We use Be Going to when we say something plans or intencions of future. For these It is called Intencions's Future. Also we use It, when we say someone prediction and there is something to confirm It.

Positive form:
It form with subject+ To Be in present+ Going to+ infinitive verb.
ex:
I am going to the cinema with my friends this afternoon.
You are going to visit the museum tomorrow.

Negative form:
it add Not to the to Be verb. subject+ To Be+ Not+ Going to+ infinitive verb.
ex:
I am not going to the cinema with my friends this afternoon.
You aren't going to visit the museum tomorrow.

Interrogative form:
In interrogative form, we put the verb To Be ahead of subject. To Be+subject+Going to+ infinitive verb.
In the small answers Its form is with subject+ to be negative or positive.
ex:
Am I going to the cinema with my friends this afternoon? Yes, I am.
Are You going to visit the museum tomorrow? No, I am not.

Credits:
book Challenge for eso2
book English Grammar in use