Structure about ''will'' and ''be going to''

Use (Will): Predictions / spontaneous decisions.

Positive Form                         Negative Form                                                                

                                   

I                                             I                  will + not + verb/won't + verb                         

He/She/It                               He/She/It      will + not + verb                         

You             will + verb          You

We                                        We               will + not + verb

They                                      They

I will see the mountains            She won't play

Interrogative Form

         I

         He/She/It                                                            (+) Subject+will+infinitive

Will   You                                                                    (-)  Subject+not+will+infinitive

         We                                                                     (?)  Will+subject+infinitive

         They

Will they dance?

Use (Be going to): Plans / intentions / organised decisions

Positive form:                                                     Negative form:

(I am, I'm) going to leave.                                   I'm not going to
(You are, You're) going to leave.                        You aren't going to
We are going to leave.                                        We aren't going to         leave
(They are, They're) going to leave.                      They aren't going to
(He is, He's) going to leave.                                He/She/It  isn't going to
(She is, She's) going to leave.
(It is, It's) going to leave.


Interrogative form:

Am I going to...?                                              (+) Subject + to be + infinitive
Are (You/We/They) going to...?     leave           (-)  Subject + to be + not + infinitive
(He/She/It) going to...?                                     (?) To be + subject + going to + infinitive