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    #1

    You know what you are doing and how to do it.

    Is this sentence incorrect? If so, why?

    You know what you are doing and how to do it.

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    #2

    Re: You know what you are doing and how to do it.

    It's correct.

    There is, however, a lack of parallelism: "what you are doing" is personalized, "how to do it" is not.

    I would chop off the three last words, which are implicit in any case, and say simply: You know what you are doing and how.

    If the actual doing is still in the future you can also say You know what you are doing and how you're going to do it.

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    #3

    Re: You know what you are doing and how to do it.

    Wow. So it's a matter of personification. How can we grasp that in these cases the matter of parallelism is not important and the sentence is grammatically correct?
    One of my colleague says that we must write:

    You know what you are doing and how you should do it. ( I say the verb structures are "you know what..." and "[you] know how..." and then you have clauses as objects of each phrase. Adding a clause, "and how to do it" does not bother my ears because, even if the job is in process, you haven't finished it yet.

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    #4

    Re: You know what you are doing and how to do it.

    The matter with the original sentence is that the two clauses do not have the same structure. Absence of parallelism is not fatal, but its presence is nonetheless desirable. Your colleague's suggestion is also very good.

  1. MikeNewYork's Avatar
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    #5

    Re: You know what you are doing and how to do it.

    Quote Originally Posted by abaka View Post
    It's correct.

    There is, however, a lack of parallelism: "what you are doing" is personalized, "how to do it" is not.

    I would chop off the three last words, which are implicit in any case, and say simply: You know what you are doing and how.
    That shortened sentence is incorrect, in my opinion.

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    #6

    Re: You know what you are doing and how to do it.

    How can we justify your sentence through this one:

    1. The reader relies on knowledge of the meanings of prefixes, suffixes, roots, compound words, and endings such as ed and ing, and how to combine them.
    2. The reader relies on knowledge of the meanings of prefixes, suffixes, roots, compound words, and endings such as ed and ing, and of how they are combined.

    I would say that in the second, the last of in incorrect. Because the meaning is clear. However my colleagues claim that due to parallelism we should include that OF. What do you think?

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    #7

    Re: You know what you are doing and how to do it.

    Quote Originally Posted by MikeNewYork View Post
    That shortened sentence is incorrect, in my opinion.
    Indeed. An extra comma is required.

    You know what you are doing, and how.

  2. MikeNewYork's Avatar
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    #8

    Re: You know what you are doing and how to do it.

    Freeguy, your original sentence doesn't bother me.

    It basically says "You know what you are doing and (you know) how to do it."

  3. MikeNewYork's Avatar
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    #9

    Re: You know what you are doing and how to do it.

    Quote Originally Posted by Freeguy View Post
    How can we justify your sentence through this one:

    1. The reader relies on knowledge of the meanings of prefixes, suffixes, roots, compound words, and endings such as ed and ing, and how to combine them.
    2. The reader relies on knowledge of the meanings of prefixes, suffixes, roots, compound words, and endings such as ed and ing, and of how they are combined.

    I would say that in the second, the last of in incorrect. Because the meaning is clear. However my colleagues claim that due to parallelism we should include that OF. What do you think?
    If parallelism is the issue, I would change "how" in the first sentence to "the ways".

    Then the structure would be "relies on the knowledge of the meanings...and the ways...". That satisfies any concern about parallelism.

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