Well, even in English there's a slight difference between "are going to" and "will do their homework". In fact, the difference is very similar to the French future proche and future simple. The difference is that future proche is mostly used for things that the speaker considers not too far in the future. Futur simple is for more distant future actions.
Fiona, this is a subtle nuance only which, in some sentences, does make a difference.
For example: My stomach hurts, I'm going to throw up. You wouldn't use "...I'll throw up" in this context, even though it's grammatically correct.
In many cases either is possible. But the distinction is more prevalent in French than it is in English.
Sign in to submit your answer
Don't have an account yet? Join today
Test your French to the CEFR standard