Learn English – Which tense should be used after “once”
grammarpresent-participlestense
Which of the following is correct?
I will update you once I reached my home.
I will update you once I reach my home.
I will update you after I reaching my home.
Best Answer
Among the three samples you have provided, the middle one is correct:
I will update you once I reach my home.
The first one is wrong because you are mentioning there that you'll do something in the future after you do something in past(which of course doesn't make sense).
Both alternatives are correct as pictured in this ngram chart, but I, personally, would prefer the simple present as the use refers to scheduled events in the near future.
Best Answer
Among the three samples you have provided, the middle one is correct:
The first one is wrong because you are mentioning there that you'll do something in the future after you do something in past(which of course doesn't make sense).
Same situation arises in the third one.
Again, as @StoneyB mentions: