[Grammar] Once + past form of the verb?

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Yura Reiri

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I'm still hesitant about using 'once' because I don't know what form of the verb will follow.

Example:

Call me once you finished it.

Call me once you finish it.

Which is correct?

Thank you.
 

Raymott

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I'm still hesitant about using 'once' because I don't know what form of the verb will follow.

Example:

Call me once you have finished it.

Call me once you finish it.

Which is correct?

Thank you.
The first one isn't correct unless you make that correction. The amended sentence is in the present perfect, and the second is in the simple present. They are now both correct.
 

Yura Reiri

Junior Member
Joined
May 26, 2011
Member Type
Student or Learner
Native Language
Tagalog
Home Country
Philippines
Current Location
Philippines
So I can only use it with the simple present and present perfect. Thank you.
But what will be the difference in using the simple present and the present perfect?
 

Raymott

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Joined
Jun 29, 2008
Member Type
Academic
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English
Home Country
Australia
Current Location
Australia
So I can only use it with the simple present and present perfect. Thank you.
But what will be the difference in using the simple present and the present perfect?
In practice, there's no difference in meaning.
 
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