Grammar B1 - Future Continuous and Future Perfect

Here is a summary of the differences between the future continuous and future perfect tenses:

• Core Difference: The distinction comes down to your position on a mental timeline—whether you are pausing time mid-action or standing at a future deadline looking back at a completed task.
• Future Continuous:
  • Function: Emphasizes that an action will be temporary and actively in progress at a specific moment in the future.
  • Structure: Uses "will be" + verb + "-ing".
  • Examples:
    • If a flight runs from 10:00 a.m. to 6:00 p.m., at 2:00 p.m. you will be flying to London.
    • A marathon runner who races from noon to 4:00 p.m. will be running at 2:00 p.m.
• Future Perfect:
  • Function: Focuses on a deadline, jumping ahead to a future time to look back at an action that is already finished. The word "by" often serves as a key clue for setting this deadline.
  • Structure: Uses "will have" + past participle.
  • Examples:
    • Looking at 7:00 p.m. after a flight lands at 6:00 p.m., you will have arrived in London.
    • At 5:00 p.m. after a marathon ends at 4:00 p.m., the runner will have finished the race.