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  1. #1
    Freeguy is offline Senior Member
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    The layers of volatile gases and liquids

    The layers of volatile gases and liquids near and above the surface of the Earth are of prime importance, along with solar energy, to maintaining of life on Earth.

    Is "to" in "in maintaining" preposition? or it's the same as "in order to" , "so as to"? Does it refer to importance?

    Thanks!

  2. #2
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    emsr2d2 is offline Moderator
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    Re: The layers of volatile gases and liquids

    ... are of prime importance, along with solar energy, in maintaining life on Earth.

    Note that "of" after "maintaining" is incorrect.
    Remember - correct capitalisation, punctuation and spacing make posts much easier to read.

  3. #3
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    Re: The layers of volatile gases and liquids

    I agree that 'of' is wrong, but I'd accept and would probably write, "They are of importance to maintaining life on Earth." "... important to the maintainance of life on Earth."

  4. #4
    Freeguy is offline Senior Member
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    Re: The layers of volatile gases and liquids

    So we can use "importance + to?". Right?

    This text came from TOEFL iBT reading passages. (I hope that you don't consider this question again as an appalling one. I'm not a person who made up Toefl questions!)
    Last edited by Freeguy; 15-Dec-2013 at 10:10.

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