The use of the simple future:
We use the simple future for instant decisions.
Example: "I've left the door open; I'll close
- We use the simple future , when we predict a future situation:
Example: "She'll pass the exam. She's hardworking"
- We use the simple future with: "I (don't) think...", "I expect...", "I'm sure...", "I wonder...", "probably".
Example: "It will probably rain tonight" , "I wonder what will happen?
- We use the simple future in conditional sentences type one. (More on conditional sentences here):
Example: "If I have enough time, I'll watch the film."