We use will or going to to talk about the future, but they are not always the same. They follow different rules depending on the situation. There are the five main cases you need to know. If you want just exercises, try this one:
Was this too hard? Study the article below and try more exercises at the bottom of the page.
Infographic – Will or Going to

When to use ‘will‘
If you decide something now, if your prediction is an opinion, when you offer, ask politely, or promise things; it’s will.
Structure: will + base verb
Decision now – will
We use will when we decide at the moment of speaking.
Example: I’m tired. I’ll take a break.
Opinion prediction – will
We use will to talk about what we think or believe about the future. There is no evidence.
Example: I think it will be sunny tomorrow.
Offers & promises – will
We use will to offer help or to make a promise.
Structure: I’ll… / We’ll…
Example: Don’t worry. I’ll help you with your homework.
When to use ‘going to’
If you decided something before the moment of speaking, it is a plan, an arrangement, if your predictions is based on facts, evidence, if we can clearly see the future; it’s ‘going to’.
Structure: am/is/are + going to + base verb
Planned decision – going to
We use going to for a plan we made before the moment of speaking.
Example: She is going to start a new course next week.
Evidence prediction – going to
We use going to when we can see something now that tells us what will happen.
Example: Look at those clouds! It’s going to rain.
Will or going to – Exercises
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