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    #1

    knowledge of/a knowledge of

    Some of my friends say that 'knowledge of' equals 'a knowledge of' and that as long as there's an adjective before 'knowledge of', we can always add 'a/an' to the phrase.

    Though I've spent quite some time studying these phrases, I'm not sure I understand the use well.

    May I ask how you native speakers use these two phrases? Thank you in advance.
    Last edited by joham; 29-Nov-2008 at 14:43. Reason: One sentence added.

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    #2

    Re: knowledge of/a knowledge of

    I have knowledge of electronics.

    I have a knowledge of electronics.

    No difference.

    But I am not sure what you are asking.

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    #3

    Re: knowledge of/a knowledge of

    Thank you very much, susiedqq. Then, can I add 'a' before the two 'special's in sentences 1 and 2, and can I leave out the word 'a' before the 'knowledge' in sentences 3, 4 and 5, without changing the meaning of these sentences? Thank you again.

    1. The legislature also approved plans to hire new judges, prosecutors and police officers with special knowledge of economic crimes.

    2. According to Goodman, no one at Fort Collins made any effort to contact him or any other researchers with special knowledge of Latin American corn.

    3. There are several ways that gardeners can use a knowledge of
    allelopathy.

    4. All the qualifications required are a good knowledge of gunnery and a fair amount of courage.

    5. I don't have a good knowledge of this subject, but I do think the pope has an obligation to state the church's view on issues, " said Nancy Carney of Sacramento, California in a response echoed by many.

    (These sentences are taken from the American corpora.)
    Last edited by joham; 30-Nov-2008 at 00:24. Reason: Something added.

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    #4

    Re: knowledge of/a knowledge of

    I believe this topic has already been dealt with. Knowledge can be countable if it refers to a knowledge of a specific subject. It is usually uncountable when it is used in its general sense. In some langaues as in German knowledge is countable.

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