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  1. Offroad's Avatar
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    #1

    Smile does & cannot

    Please, dear teachers

    are both the same?

    Why cannot X be higher than Y?
    why does X can not be higher than Z?

    Thanks

  2. Raymott's Avatar
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    • Join Date: Jun 2008
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    #2

    Re: does & cannot

    Quote Originally Posted by marciobarbalho View Post
    Please, dear teachers

    are both the same?

    Why cannot X be higher than Y?
    why does X can not be higher than Z?

    Thanks
    No. The first sentence is correct. The second is not (the words can't go in this order).
    Sentence one would still be strange in many contexts.
    "Why can't building A be taller than building B?" The answer usually would be "Because it isn't".
    Here's a context in which it could be used:
    A: "Why can't the shower head be higher than the water tank".
    B: "Because it works by gravity. The tank must be higher".


    • Join Date: Feb 2008
    • Posts: 484
    #3

    Re: does & cannot

    Quote Originally Posted by marciobarbalho View Post
    Please, dear teachers

    are both the same?

    Why cannot X be higher than Y?
    why does X can not be higher than Z?

    Thanks
    Why cannot/ can't X be higher than Y?
    why does X can not be higher than Z?
    A question requires an auxiliary, in this case 'can't'. You only put do/does/did if there is no auxiliary.

    (NB It's better to put 'can't than 'cannot'.)

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