until
until and till
These two words can be used both as prepositions and conjunctions. They mean exactly the same. Till (AmE also ’til or til) is informal.
- OK, then, I won’t expect you until/till midnight.
- I’ll wait until/till I hear from you.
- The new timetable will remain in operation until June 30.
until/till and to
To can sometimes be used as a preposition of time with the same meaning as until/till. This happens after from …
- I usually work from nine to five. (or … from nine until/till five.)
We can also use to when counting the time until a future event.
- It’s another three weeks to my birthday. (or … until/till my birthday.)
In other cases, to is not generally used.
- I waited for her until six o’clock, but she didn’t come. (not
I waited for her to six o’clock …)
For American English from … through, (see here).
Distance and quantity: until/till not used
Until/till is used only to talk about time. To talk about distance, we use to, as far as or up to; up to is also used to talk about quantity.
- We walked as far as/up to the edge of the forest. (not
… till the edge …) - The minibus can hold up to thirteen people. (not
… until thirteen people.) - You can earn up to £1,500 a week in this job.
Tenses with until
Present tenses are used to refer to the future after until (see here).
- I’ll wait until she gets here. (not
… until she will get here.)
Present perfect and past perfect tenses can emphasise the idea of completion.
- You’re not going home until you’ve finished that report.
- I waited until the rain had stopped.
Structure with Not until …
In a literary style it is possible to begin a sentence with Not until …, using inverted word order in the main clause (see here).
- Not until that evening was she able to recover her self-control.
- Not until I left home did I begin to understand how strange my family was.
until and by: states and actions
We use until to talk about a situation or state that will continue up to a certain moment. We use by (see here) to say that an action or event will happen at or before a future moment. Compare:
- Can I stay until the weekend?
Yes, but you’ll have to leave by twelve on Monday at the latest. (= at twelve on Monday or before) - Can you repair my watch if I leave it until Saturday?
No, but we can do it by next Tuesday. (not… until next Tuesday.)
until and before
Not until/till can mean the same as not before.
- I won’t be seeing Judy until/before Tuesday.
And both until and before can be used to say how far away a future event is.
- It’ll be ages until/before we meet again.
- There’s only six weeks left until/before Christmas.