will / be going to for prediction

Use:

Both be going to and will can be used to predict future events. In many cases they can be used interchangeably. 
Experts believe that the recession will continue.
Experts believe that the recession is going to continue.

However, in some cases they are used differently:

• Use going to when there is evidence about what is going to happen.

Look at the time! We’re going to be late!

• Use will / won’t when guessing about the future.

I bet Robin will be late again.

• Will is often used with phrases such as I think…, I expect…, I don’t think…, I bet… , I’m sure…, I doubt if/that…  when making predictions

• It is more common to use I don’t think + will, not I think + won’t

I think it won’t rain => I don’t think it will rain

Form:

be going to

Positive

I	am / ‘m	going to	verb (infinitive form)
you / we / they	are / ‘re
he / she / it	is / ‘s

Negative

I	‘m not	going  to	verb (infinitive form)
you	aren’t    OR   ‘re not
he / she / it	isn’t      OR     ‘s not

Questions

Am	I	going  to	verb (infinitive form) ?
Are	you / we / they
Is	he / she / it

Short Answers

Yes,	I am.	No,	I’m not.
	you / we / they are.		you / we / they    ‘re not / aren’t
	he / she / it is.		he / she / it ‘s not / isn’t

will

Positive / Negative

I / You / He / She / It  / We / They	will	verb (infinitive form).
	won’t

Will

I / you / he / she / it  / we / they /

verb (infinitive form)?