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nickole
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help needed
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How can I rephrase the sentence using HAVE: I �m sure Tom hasn �t fixed the fax machine yet. (Have) Tom ................................ the fax machine yet.
Thank you
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7 Feb 2012
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perma
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Tom can �t have fixed the fax machine yet  |
7 Feb 2012
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yanogator
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or "Tom mustn �t have fixed the fax machine yet".
Bruce |
7 Feb 2012
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Amandina
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@ Bruce
I don �t understand your version. When would you say that?
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7 Feb 2012
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pilarmham
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I would say "Tom mustn �t have fixed the fax machine yet", I agree with Bruce.
And yet...
I learned that this should go: "Tom can�t have fixed the fax machine yet" because it is a negative deduction, but... |
7 Feb 2012
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anaisabel001
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I �d say " Tom can �t have fixed the fax machine yet"
We use
can�t + perfect infinitive when we feel sure something didn�t happen in the
past.
I
thought I saw John in town this morning but it can�t have been him � he�s in
Greece this week.
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7 Feb 2012
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Apodo
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Or:
I �m sure Tom won �t have fixed the fax machine yet, he hasn �t had time. |
8 Feb 2012
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PhilipR
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Tom can �t have fixed the fax machine yet.
In order to understand, think of this:
Tom fixed the fax machine? That can �t be true! |
8 Feb 2012
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yanogator
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@Amandina:
Nobody is making copies. Tom must not have fixed the copy machine yet.
Must not have (or mustn �t have) is used for a negative deduction, like can �t have. It is just the negative of "must have", which is used for a logical deduction. It means the same as "I guess he hasn �t fixed the copy machine yet".
The trash cans are still at the curb and full. The garbage truck must not have come yet.
I haven �t heard from my sister. She must not have received my letter yet.
Now that I think of it, we usually don �t use the contraction in these constructions.
Bruce |
8 Feb 2012
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mikiduzza
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I �d go for can �t have fixed.
We usually express logical assumption/certainty about a thing which hasn �t happened using CAN �T, while MUST + perfect infinitive is used for things which we assume have happened.
So, Bruce �s version doesn �t sound familiar. I wouldn �t use it anyway.
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8 Feb 2012
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