Will and shall can be used to state predict that an event or an action will take place or will occur The model verbs can used to make a prediction about an event or action about the future.
I think we will be able to go and see the move tonight.
My mother thinks we will not get home be it starts to rain.
Requests - Offers - Suggestions - Can - Could - May - Shall
To make requests, offers or suggestions can be stated with the model verbs
Permission - Can - Could - May - Might
Can, could, may and might are model verbs that can be used to give permission or deny permission to do something or to someone.
Can I help you cook dinner?
You may not watch T. V. after dinner.
Certainty - Possibility - Can - Might - may- Could - Shall
-Can, might
- and could are model verbs that can be used to state certainty and possibility.
Do you think it might rain tomorrow night?
I might be home before midnight.
You can come over tonight if you would like to.
Ability - Inability - Can - Could - Able to
My father hopes that we will be able to go to the moves.