Going to, Present Continuous
and Will

Three ways to talk about the future

English has no single "future tense". The choice between these three forms depends on why you're talking about the future, not just when:

• be going to + infinitive — plans, intentions, predictions from evidence
• present continuous (be + -ing) — fixed arrangements (a time or booking is set)
• will + infinitive — decisions made now, predictions from opinion, offers, promises

Form — be going to

	example
positive	I 'm going to be late. · He 's going to come later.
negative	I 'm not going to be late. · It isn't going to arrive.
question	Are you going to be late? · What are you going to do?

In informal speech, going to is often pronounced "gonna" /ˈɡənə/.

Form — will

	example
positive	I 'll be late. · They 'll buy it.
negative	I won't be late. · It won't work.
question	Will you meet him? · What will you do?

shall can replace will, but normally only after I and we, and in more formal English. The contracted form is also 'll.

Plans and arrangements — going to vs present continuous

	going to	present continuous
what	intention — details not fully arranged	arranged (time, place or booking set)
example	I'm going to learn Italian one day.	I'm flying to Rome at six on Monday.

Present continuous is also common to explain why you can't do something: 'Can you come to lunch?' 'No, I'm working on Saturday.'

Don't use will for personal arrangements:
❌ We will sit in the front row.
✅ We're sitting / going to sit in the front row.

In formal English, will can be used for arrangements: The government will meet tomorrow.

Predictions — going to vs will

	going to	will
basis	evidence we can see now / common knowledge	personal opinion / knowledge
example	Look at those clouds — it's going to rain.	Don't worry, it won't rain — I know this area.

We often ask predictions with do you think: Do you think he'll marry her?

For negative predictions, make think negative: I don't think he'll marry her. (NOT 'I think he won't marry her.')

probably, certainly, definitely

	positive verb	negative verb
probably	I'll probably go.	I probably won't go.
definitely	I'll definitely pass.	I definitely won't pass.

The adverb goes before the main verb in positives, and before won't / 'm not in negatives.

Immediate decisions — will

Use will when you decide at the moment of speaking:

'The manager isn't here.' 'OK, I'll call back later.'

Compare with going to — a decision you'd already made:

'What are you doing this afternoon?' 'I'm going to study.' (already planned)

Offers, promises and warnings — will

• offer — Don't worry about a taxi. We'll take you to the hospital.
• promise — I'll work harder, I promise.
• warning — Don't lift that — you'll hurt yourself!

For suggestions, use shall, not will:
✅ Shall I open a window?   ❌ Will I open a window?

Common mistakes

❌	✅
We will sit in the front row. (arranged)	We're sitting / going to sit in the front row.
It will rain — look at the sky!	It's going to rain — look at the sky!
I think he won't come.	I don't think he'll come.
I'll probably will be late.	I'll probably be late.
I'm going to call you back later. (just decided)	I'll call you back later.
Will I open the window? (suggestion)	Shall I open the window?