1. 'Will' = Voorspellingen, snelle beslissingen, beloftes'It will rain this afternoon'. 'I will help you carry that bag'
2. 'Present continuous' = Plannen die vaststaan
I'm having a party tomorrow. He's driving to France tomorrow.
3. Present simple = Schema's, afspraken
'The train leaves at 6pm.' 'Summer holiday starts on July 20th.'