THE SIMPLE PRESENT TENSE IS USED:
- To express habits, general truths, repeated actions or unchanging situations, emotions and wishes:
I smoke (habit); I work in London (unchanging situation); London is a large city (general truth) - To give instructions or directions:
You walk for two hundred meters, then you turn left. - To express fixed arrangements, present or future:
Your exam starts at 09.00 - To express future time, after some conjunctions: after, when, before, as soon as, until:
He’ll give it to you when you come next Saturday.