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Which one to use?Beginnerstructurestructure
Going tovsWill
'Going to' expresses a prior plan or evidence-based prediction; 'will' expresses a spontaneous decision or general prediction.
Side-by-side comparison
Going to
structure"Going to" expresses plans already decided or predictions based on visible evidence right now. The decision already exists before you speak.
I have already bought the tickets; we are going to see the play on Saturday.
Look at those dark clouds, it is going to rain very soon, I can feel it.
She has decided she is going to study medicine next year.
Will
structure"Will" expresses decisions made at the moment of speaking, promises, predictions without immediate evidence, or spontaneous offers. The decision arises as you speak.
The phone is ringing. I will get it, do not worry.
I think she will do really well in the interview tomorrow.
Will you help me carry these boxes upstairs? They are quite heavy.
Common mistake
- •"I will going to" is impossible: they are alternatives, never combined.
- •And using "going to" for a spontaneous decision sounds odd: if the phone rings and you decide to answer right now, say "I will answer it", not "I am going to answer it" (which implies you already planned it).
Trick to remember it
Already decided? "Going to". Deciding right now while speaking? "Will". Visible evidence of what will happen? "Going to". Is it a promise or offer? Always "will". Formal written text? "Will" in both cases.
Quick rule
- •"Going to" = prior plan + prediction with visible evidence.
- •"Will" = spontaneous decision + general prediction + promises + offers.
- •Formal written text: prefer "will".
Did you know?
English has at least seven different ways to talk about the future: WILL, GOING TO, present continuous ("I am meeting him tomorrow"), present simple ("The train leaves at nine"), ABOUT TO ("I am about to call"), SHALL (formal British English), and the future perfect. This abundance contrasts with the fact that English has NO morphological future tense, it does not add a suffix to the verb the way Spanish does ("hablar-é"). WILL in its origins was not a future marker: it was a full verb meaning "to wish" or "to want." Over time it lost that meaning and became the quintessential future marker of modern English.
Practise what you learned
Exercise 1 · Pick the right one
"Look at those clouds!" "It _____ rain. Let's go inside."
Exercise 2 · Pick the right one
"The phone is ringing!" "Don't worry, I _____ get it."
Exercise 3 · Form the word
Related word pairs
Be about tovsBe going to
'Be about to' signals something happening very soon; 'be going to' expresses plans or predictions.
Present simplevsPresent continuous
Present simple expresses facts, routines, and permanent truths; present continuous expresses current or temporary actions.
WillvsGoing to
"Will" expresses spontaneous decisions, predictions, and promises; "going to" expresses prior plans and intentions decided in advance.
AvsAn
'A' is used before consonant sounds; 'an' is used before vowel sounds.
Bryan López
Founder of SpeakUP Academy