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    #1

    "no significant change has occured"

    Hello, I am trying to work with scientific article and have one question.

    I am trying to write in present tense, but following setence is really confused

    "In terms of growth rate, no significant changes has occured and samples are all stable"

    In that sentence, present perfect tense (has occured) is included in the sentence. Is it okay to have present perfect tense or is there any better way to rewrite this sentence?

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    #2

    Re: "no significant change has occured"

    Quote Originally Posted by ming272 View Post
    Hello, I am trying to work with scientific article and have one question.

    I am trying to write in present tense, but following setence is really confused

    "In terms of growth rate, no significant changes has occured and samples are all stable"

    In that sentence, present perfect tense (has occured) is included in the sentence. Is it okay to have present perfect tense or is there any better way to rewrite this sentence?
    ***Not a teacher***

    I don't think there is anything wrong with the tenses in your sentence. However, there is a subject-verb agreement problem. No significant change has occurred, or no significant changes have occurred. Not sure if one of those is better than the other; both are used frequently.

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    #3

    Re: "no significant change has occured"

    So It is okay to used present perfect tense even though article encourages to use present tense?

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    #4

    Re: "no significant change has occured"

    Quote Originally Posted by ming272 View Post
    So It is okay to used present perfect tense even though article encourages to use present tense?
    Grammatically, it is totally fine. If you are referring to some general scientific article writing guidelines, I still think it is fine - the present perfect tense probably fits in the category they are referring to as "present" - but you might want to check with a colleague to be sure.

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    #5

    Re: "no significant change has occured"

    Quote Originally Posted by raphey View Post
    Grammatically, it is totally fine.
    It's not totally fine- it should be no significant change has occurred or no significant changes have occurred.

    It is okay to used present perfect tense even though article encourages to use present tense
    The present perfect is present tense- it is the perfect aspect of the present tense. However, depending on the context, you might be able to use occurs.

    PS The samples might be more natural, again depending on the wider context.

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