Will vs. Be Going To

Will vs. Be Going To
Prior Plan -- Strong Intention
He’s busy this evening. He’s going to have dinner with his girlfriend.
After that he’s going to study for his classes in the library with his classmates.
Prediction on
the Basis of Present Evidence
Look at the sky. It’s going to snow.
Prediction
According to the weather forecast, it’s going to be sunny tomorrow.
According to the weather forecast, it’ll be sunny tomorrow.
Willingness -- Volunteering (no prior plan)
A: I need some milk from the store. B: Okay, I’ll get it for you.
Refusal of an Invitation / Request
We asked him to help our committee, but he will not do it.
General Truths
Plants will die if they don’t get enough water.
Copyright © 2000, 2005 Kazumasa Aoyama