B2 · grammar

Future Perfect Exercises (B2) — Free

Future perfect: actions that will be complete before a time in the future

The future perfect (will have + past participle) describes something that will be complete before a point in the future: By 6 p.m., I will have finished the report. Imagine yourself at that future moment, looking back. It usually goes with by + a time (by Friday, by then, by the end of the year) or by the time + a clause. The negative is won't have + past participle (We won't have finished by then), and questions put will before the subject (Will you have read it by Monday?). With state verbs like be and know, it measures a period up to a future point: Next month they will have been married for ten years. A common mistake is using will after by the time, when or before: in those time clauses English uses the present simple, so say 'By the time you arrive', not 'By the time you will arrive'. Also, 'by' means 'not later than'; don't confuse it with 'until'.