Mar 25, 2016 11:45
8 yrs ago
English term

simple vs perfect after as soon as

Non-PRO English Other Other English Grammar
Is there a good and simple explanation for using the Present Perfect in the first sentence and Present Simple in the second one?

1. Send that letter by courier as soon as you have written it.
2. Tell her to come to my office as soon as she arrives.

Thank you in advance.

Discussion

Tony M Mar 25, 2016:
@ Asker In the first example, the 'as soon as moment' is a completed act: the letter has been written; so the perfect is required. You could equally well write 'as soon as you write the letter', but it sounds slightly odd.

In the second example, the action of arriving is not per se the completion of something — rather, the arrival is almost the start of something new. You could equally say 'as soon as she has arrived', but again, it sounds a little odd, as 'arriving' is not the sort of action one completes. Compare this example:

"Phone me as soon as she arrives and has taken off her coat."

Responses

+4
1 hr
Selected

depends what's happening now

The writing of the letter takes time, and the perfect tenses are used to express that idea. It implies that the letter is already being written or writing will start soon and take some time.

Arriving doesn't take any time at all, however long the journey itself takes. One minute you aren't there; the next you are. In some languages, a future tense will be used. This is clearly logical. But English never uses a future for this type of construction.
Peer comment(s):

agree Mark Nathan : To do something when an action has been completed, vs to do something when an event occurs.
33 mins
Thanks. That's nice and clear and concise :).
agree Tina Vonhof (X) : and with Nathan.
2 hrs
Thanks
agree Victoria Britten
2 hrs
Thanks
agree acetran
14 hrs
Thanks
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4 KudoZ points awarded for this answer. Comment: "That's perfectly clear now. Thanks a lot!"
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