Time Clauses
After time conjunctions (when, after, before, as soon as, until, while, once, by the time), use present simple or present perfect — never "will" — even when talking about the future. "When I see her, I will tell her." NOT "When I will see her…" This is one of the most common errors with time clauses.
After time conjunctions (when, after, before, as soon as, until, while, once, by the time), use present simple or present perfect — never "will" — even when talking about the future. "When I see her, I will tell her." NOT "When I will see her…" This is one of the most common errors with time clauses.
Practice
I'll finish this report before I ___ home.
Once youthe form, please hand it to the receptionist.
Put the words in the correct order: