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    #1

    Is it possible to use 'by' instead?

    I saw a sentence last night as follows:

    I was convinced of his theory.

    Is it possible to use 'by' instead? If not, why? Are there any other examples in the English language?

    Many thanks in advance.
    Last edited by rodgers white; 10-Mar-2017 at 13:50.

  2. Matthew Wai's Avatar
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    #2

    Re: Is it possible to use 'by' instead?

    Quote Originally Posted by rodgers white View Post
    Are there any other examples in the English language?
    Bookmark this: http://fraze.it/n_search.jsp?q=%22convinced+by%22&l=0
    I am not a teacher.

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    #3

    Re: Is it possible to use 'by' instead?

    You mean we should use 'by' instead of 'of', is that so? Please have a look at this: http://fraze.it/n_search.jsp?q=%22co...&findid=-1&ff=


    I feel confused about the difference between 'convinced by' and 'convinced of'.

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    #4

    Re: Is it possible to use 'by' instead?

    Quote Originally Posted by rodgers white View Post
    I feel confused about the difference between 'convinced by' and 'convinced of'.
    'Convinced' is a verb in the former and an adjective in the latter.
    I am not a teacher.

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    #5

    Re: Is it possible to use 'by' instead?

    Quote Originally Posted by Matthew Wai View Post
    'Convinced' is a verb in the former and an adjective in the latter.
    In the sentence "I was convinced of his theory", which one is correct, by or of?

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    #6

    Re: Is it possible to use 'by' instead?

    Having read the examples on FRAZE·IT, I consider both possible.
    I am not a teacher.

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    #7

    Re: Is it possible to use 'by' instead?

    Both are possible.

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    #8

    Re: Is it possible to use 'by' instead?

    Quote Originally Posted by rodgers white View Post
    In the sentence "I was convinced of his theory", which one is correct, by or of?
    They're both fine but mean different things.

    When you say "by," it means that his theory changed your mind. You didn't believe it before, but now you do. It was his theory that convinced you.

    When you say "of," it just means that you believed strongly that his theory is correct. You might have already believed it.
    I'm not a teacher. I speak American English. I've tutored writing at the University of Southern Maine and have done a good deal of copy editing and writing, occasionally for publication.

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    #9

    Re: Is it possible to use 'by' instead?

    Only by makes sense to me. Look at these examples with by:

    I was convinced by the evidence.
    I was convinced by John.
    I was convinced by their arguments.

    The phrases in italics state what convinced me. Now look at the following examples with of.

    I was convinced of his commitment.
    I was convinced of the usefulness of examples.
    I was convinced of her innocence.

    The italics are what I believe in as a result of being convinced. You could, feasibly, combine both kinds of preposition phrase:

    I was convinced (by John) of his commitment.
    I was convinced (by their arguments) of her innocence.
    I was convinced of the usefulness of examples (by the evidence).

    So: I was convinced by the theory.

    Or: I was convinced of the validity of the theory.



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    #10

    Re: Is it possible to use 'by' instead?

    Quote Originally Posted by rodgers white View Post
    Are there any other examples in the English language?
    I think the red part above can be omitted because all the examples must be in English.

    Quote Originally Posted by Charlie Bernstein View Post
    They're both fine but mean different things.
    Quote Originally Posted by jutfrank View Post
    Only by makes sense to me.
    The above illustrates the following:
    Quote Originally Posted by Piscean View Post
    Native speakers do not always agree. Learners need to accept this.
    I am not a teacher.

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