By the time you wake up/By 7 I will already have left for school.
Future perfect, to talk about an action that will be completed by some moment/ other action in the future.
Will they receive a wedding invitation on time? – Don’t worry I’m sending it by express mail
Present Continuous, arrangements for the future
When you get home, I’ll be studying for my English exam.
Future Continuous, to talk about an action that will be happening at a specific moment in the future, interrupted action in the future
Oh, dear, be careful. You are going to cut your finger!
Going to, to talk about predictions based on evidence
Will your sister be staying with you this Easter? – She always does but we still haven’t heard from her
Future Continuous, to talk about something that is expected to happen, since it happens all the time
I ordered a pasta, not a lasagna. – Sorry, sir, I will take this back and get you a pasta.
Future Simple, spontaneous decision
The Smiths' train arrives at 6.30, we must be ready!
Present Simple, timetables and schedules
By February 2025 we will have been teaching for 25 years!
Future Perfect Continuous, talk about the duration of an action before specific time in the future
I promise I will help you with your errands.
Future Simple, to talk about promises (also threats, offers, suggestions etc)
She will call us as soon as she reaches London.
Future Simple, future prediction, future fact; Present Simple: used to talk about a condition of time in the future, after as soon as/by the time/when/if/until
I think I will pass the driving test this time.
Future Simple, prediction based on personal opinion
I won’t be able to join you. I will be helping my parents with the redecoration.
Future Continuous, to talk about action that will be in progress around some time in the future
Will you be teaching psychology next semester, professor?
Future Continuous, polite enquiry about future plans
We are going to visit the natural art museum.
Going to, to talk about plans and intentions
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