1

I asked a related question, which its answer's comments say I can use different tense after "Until", I thought of posting the question in a separate question to get a complete answer.

Which of the following are possible or more natural

  • I waited until he left the room, then I entered there
  • I waited until he leaves the room, then I entered there
  • I waited until he had left the room, then I entered there

I know it could also be the following, but I didn't find a better example with "until". If you know use that.

  • I waited for him to leave the room

What about present:

  • I am waiting until he comes back
  • I am waiting until he will come back
  • I wait until he comes back

Or

  • I can't help you until I finish/have finished my work
4
  • The tense of the verb after until is governed but the verb before until.
    – Peter
    Dec 29 '16 at 7:17
  • @Peter but still there are several options.
    – Ahmad
    Dec 29 '16 at 8:55
  • None of the sentences has an ending punctuation. They can reasonably be considered incorrect (grammatically). And in the case of your question, I prefer #1 from the first three and #1 and #3 in the second three.
    – Abbasi
    Dec 29 '16 at 13:36
  • Note that I waited for him to leave the room and I waited until he left to enter the room are not the same thing. Dec 29 '16 at 15:18
5

Ahmad, it follows the same rules as the past question. All tenses mentioned can be used in that sentence. However, as it's a past tense and you are telling a past history, using "had" would make it sound more fluent.

I waited until he had left the room, then I entered there.

Now talking about your second question.

I am waiting until he comes back - Right

I am waiting until he will come back - Wrong

I wait until he comes back - Right

Remember, "until" cannot be used followed by the future tense, all the others alternatives are suitable for until, past tense, past continuous, present tense, present continuous, present perfect..

And I waited for him to leave the room also works and sounds good too, and functions with others tenses too:

I was waiting for him to leave the room

I will be waiting for him to leave the room;

I waited for him to leave the room

I have been waiting for him to leave the room.

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