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Arjun Kumar Posted 14 years ago
Grammar

Difference between.

What is the difference between the sentences:1. When did you do this?2. When have you done this?Which sentence is to be used when?Thanks in advance.
  

Top answer

The present perfect is not used with a specific mention of time, and it seems that the second question ( When have you done this? ) is prompting the listener to answer with just such a mistake ( I have done this yesterday ). I would therefore use only the first one.

— CalifJim

  • The present perfect is not used with a specific mention of time, and it seems that the second question ( When have you done this?
  • ) is prompting the listener to answer with just such a mistake ( I have done this yesterday ).
  • I would therefore use only the first one.
  • CJ
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1 Answers
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The present perfect is not used with a specific mention of time, and it seems that the second question (When have you done this?) is prompting the listener to answer with just such a mistake (I have done this yesterday).

I would therefore use only the first one.

CJ
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