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    #1

    Difference between "had/has/have"

    They are able to do this.

    They have able to do this.

    They were able to do this.

    They had able to do this.

    please differ the meaning of these above sentences explicitly.

  1. 5jj's Avatar
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    #2

    Re: Difference between "had/has/have"

    Welcome to the forum, tsiddik.
    Quote Originally Posted by tsiddik View Post
    They are able to do this. Present tense.
    They have able to do this. Not a possible construction.
    They were able to do this. Past tense.
    They had able to do this. Not a possible construction.
    Did you mean to write 'They have been able to do this' (present perfect) and 'They had been able to do this' (past perfect)?

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    #3

    Re: Difference between "had/has/have"

    Eventually,they have been able to show their best credentials.

    Eventually,they had been able to show their best credentials.

    Just differ the meaning between them?
    Last edited by tsiddik; 24-Jun-2012 at 13:30.

  2. 5jj's Avatar
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    #4

    Re: Difference between "had/has/have"

    No. I have already said that 'not able' is not a possible construction.

    (later) I see that you have now added 'have/had' to your previous post.
    Last edited by 5jj; 24-Jun-2012 at 15:07.

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    #5

    Re: Difference between "had/has/have"

    please differ the meaning of them,this is my priority.

    Eventually,they have been able to show their best credentials.
    Eventually,they had been able to show their best credentials.

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    #6

    Re: Difference between "had/has/have"

    [QUOTE=tsiddik;895115]They are able to do this.

    They have able to do this. this structure is unacceptable

    They were able to do this. specific ability in the past at a particular situation

    They are able to do this. general ability at present

    They have able to do this. this structure is unacceptable


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    #7

    Re: Difference between "had/has/have"

    They are able to do this - Sentence with present tense

    They have able to do this - Error in sentence formation

    They were able to do this - Sentence with past tense

    They had able to do this - Error in sentence formation

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    #8

    Re: Difference between "had/has/have"

    Quote Originally Posted by tsiddik View Post
    please differ the meaning of them,this is my priority.

    Eventually,they have been able to show their best credentials.
    Eventually,they had been able to show their best credentials.
    I don't know why two new posts have come since your last question which only repeated what has already stated, but neither of these work.

    Eventually, (at some point in the past, although it took some time to accomplish it) they were able to show their best credentials.

    Eventually, (at some point in the future, although it will take you some time to accomplish it) they will be able to show their best credentials.

    "Eventually" does not work with the present or past perfect.

    I should also say that the expression "able to show their best credentials" doesn't mean anything to me.
    I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.

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