The future simple tense is used to talk about the future in the following ways:
- spontaneous decisions
- "We’re having a picnic tomorrow. It will rain."
- "Will you go to the party?" "Hmm ... yes, I will go to the party."
- "You look tired. I will make you a cup of tea."
- "I will finish the work tomorrow."
Sentences using future simple for prediction often begin with "think", for example:
- I think she will win the match.
- She doesn't think they will arrive on time.
For "I" and "We", we can use "shall" in place of "will" - it is more formal:
- I shall go to the party.
- We shall visit him later.
In questions, it is like making a suggestion:
- Shall we go to the cinema?
- Shall I open the window?
N.B. Do not use "will" to talk about plans or arrangements that you have already decided to do. For these you must use "going to" or present continuous for the future.
- I'm seeing the doctor tomorrow.
- She's going to visit her aunt at the weekend.