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  1. #1
    TristaBi is offline Newbie
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    Default some sentences I cannot correct

    However, if there has been existence of life on other planetary bodies cannot be obtained until now.

    Why this sentence is not right? And how I can correct?

  2. #2
    5jj's Avatar
    5jj is offline VIP Member
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    Default Re: some sentences I cannot correct

    Quote Originally Posted by TristaBi View Post
    However, if there has been existence of life on other planetary bodies cannot be obtained until now.

    Why is this sentence is not right? And how I can correct?
    "cannot be obtained" has no subject. You cannot correct it unless you know what cannot be obtained. Even then, the present tense seems strange when used with 'until now'.

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