Will or Going to?

Will or Going to?

Going to

We use ‘(be) going to’ when something is very probable (if it has been planned, for example). It is the same as ‘va a…’ in Spanish

Will

We use ‘will’ when it is a personal interpretation of the future (‘will’ literally means ‘voluntad’) For example:

A prediction

A promise

A decision

If it depends on something.

Which is more correct?

I’m going to have an exam tomorrow 
I’ll have an exam tomorrow 

and:

I’m sure you’re going to pass
I’m sure you’ll pass.. 

(I’m going to have an exam tomorrow= It’s sure to happen/I’m sure you’ll pass= It’s someone’s opinion, but it’s not planned)

Choose the best option:

1. Liverpool ……………….  win the league this year.

2. The radiators don’t work? I………………………….. phone the plumber.

3. I saw the weather forecast. It……………………………rain tomorrow.

4. I……………………………………….tell Sarah if I see her.

5. I swear I (not) ……………………………… lie to you anymore!

(1. Liverpool will win the league this year.2. The radiators don’t work? I’ll phone the plumber.3. I saw the weather forecast. It’s going to rain tomorrow.4. I’ll tell Sarah if I see her.5. I swear I won’t lie to you anymore!)

NOTE: The difference between ‘will/won’t’ and ‘(be) going to’ is not usually a question of Correct/Incorrect. Simply, one option is better then the other.