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    #1

    future perfect

    Hello,

    1- (By) this time next week, we will have just arrived in Italy. (Is 'by' is necessary in this sentence?)

    2- I will have waited for you until 5 pm. (The process of 'waiting' will last until 5 pm)
    3- I will have waited for you by 5 pm. (I will wait for you 'no later than 5 pm or before 5 pm')

    (Which one must we use in negative future perfect, until or by?)

    4- She won't have completed the report until/by tomorrow.
    5- They won't have worked with these children until/by next May.
    6- He won't have arrived home until after 5:30.

    I have some trouble about 'future perfect', and I have given you some sentences along with my explanations. Could you please check them?

    Thanks
    Last edited by aysaa; 21-Aug-2013 at 15:55. Reason: typo

  1. bhaisahab's Avatar
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    #2

    Re: future perfect

    Quote Originally Posted by aysaa View Post
    Hello,

    1- (By) this time next week, we will have just arrived in Italy. (Is 'by' is necessary in this sentence?) It's possible with or without "by" but I would delete "just".

    2- I will have waited for you until 5 pm. (The process of 'waiting' will last until 5 pm)
    3- I will have waited for you by 5 pm. (I will wait for you 'no later than 5 pm or before 5 pm')

    2 and 3 are incorrect.

    Thanks
    Bhai.

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    #3

    Re: future perfect

    Quote Originally Posted by bhaisahab View Post
    Bhai.

    Bhai, #3 seems to me quite okay. Please do not mind it's just my opinion or what I feel myself. Because I have seen future perfect tense always goes with "by". The truth is that most of the students get in trouble with perfect tense. Could you please tell us why it is incorrect?

    Note that I am neither a teacher nor a native speaker.
    Last edited by UM Chakma; 22-Aug-2013 at 13:45. Reason: added that I am not a teacher

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    #4

    Re: future perfect

    Quote Originally Posted by aysaa View Post
    (Which one must we use in negative future perfect, until or by?)

    4- She won't have completed the report until/by tomorrow.
    5- They won't have worked with these children until/by next May.
    6- He won't have arrived home until after 5:30.
    Thank you both. Why is sentence 3 is wrong? What about sentences 4, 5 and 6? I think 'by' is the correct one, am I right?

  2. bhaisahab's Avatar
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    #5

    Re: future perfect

    Quote Originally Posted by UM Chakma View Post
    Bhai, #3 seems to me quite okay. Please do not mind it's just my opinion or what I feel myself. Because I have seen future perfect tense always goes with "by". The truth is that most of the students get in trouble with perfect tense. Could you please tell us why it is incorrect?

    Note that I am neither a teacher nor a native speaker.
    In what context would you use #3?

  3. bhaisahab's Avatar
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    #6

    Re: future perfect

    Quote Originally Posted by aysaa View Post
    Thank you both. Why is sentence 3 is wrong? What about sentences 4, 5 and 6? I think 'by' is the correct one, am I right?
    4- She won't have completed the report until/by tomorrow. Both are possible, with different meanings.5- They won't have worked with these children until/by next May. As above.
    6- He won't have arrived home until after 5:30. This is fine.

  4. konungursvia's Avatar
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    #7

    Re: future perfect

    Bhai is certainly correct. The sentence with "by" doesn't make sense, logically or grammatically.

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    #8

    Re: future perfect

    Quote Originally Posted by bhaisahab View Post
    In what context would you use #3?



    "I will be back by 6. They will have finished by then." This is I collected from a certain website and it's correct. Then can't I say it to mean the same as "They will have finished by 6"? And is this not as same as #3?

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    #9

    Re: future perfect

    No, it's not- the verb is different. Changing the meaning can change whether a structure works or not.

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    #10

    Re: future perfect

    Quote Originally Posted by Tdol View Post
    No, it's not- the verb is different. Changing the meaning can change whether a structure works or not.
    @ UK Chakma

    Compare:
    I will finish by 6.

    I will finish until 6.

    I will wait by 6.

    I will wait until 6.

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