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  1. Newbie
    Interested in Language
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    • Join Date: Sep 2010
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    #1

    Tense questions

    Could you please advise the difference between

    I will write a preface when I have finished the book.

    and
    I will write a preface when I finish the book.

    Thank very much.

  2. 5jj's Avatar
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      • British English
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      • Czech Republic

    • Join Date: Oct 2010
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    #2

    Re: Tense questions

    Quote Originally Posted by cy982002 View Post
    Could you please advise the difference between

    1. I will write a preface when I have finished the book.

    and
    2. I will write a preface when I finish the book.

    Thank very much.
    In practical terms there is not a great deal of difference.
    In #1, the present perfect makes it clear that the writing will be done after the finishing.
    In #2 it is possible that the writing will begin as soon as the book is finished.

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