| To describe a scene in the future: |
| This time next week I'll be skiing in the Alps. |
| To ask a question about the future politely: |
| When will you be telephoning? Can you give me some idea of when you'll be arriving? |
| To talk about something that is routine, or
the normal course of events: |
| I'll be seeing him on Monday at the weekly meeting. We shan't be meeting them again for some time. ...and you'll be flying Iberia as usual? |
a scene
Compare the equivalent present tense...
routine
A routine can allow you to guess or make a supposition about what someone else is doing.
It's one thirty - he'll be having lunch now.