Phrase with "had had had"

[Palych]

Is this sentence correct:

"You whould have another opinion if you had had had dealings with him for a more long time."?

[Morteza]

As far as I know,it's wrong.
You would have...if you had... or
You would have had...if you had had... seem to be correct.
Morteza

[Palych]

Your, Morteza, comment refers to cases like

"You whould have another opinion if you had had dealings with him."

My example contains a reference to extent:

"You whould have another opinion if you had had had dealings with him for a more long time."?

I think it is correct, though, three "had" look to me not very natural. I hope a teacher will resolve my doubts.

[Mister Micawber]

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No, sorry- that does not work, Palych. What verb form do you think you are using? The 3rd conditional (although what you have created is a mixed conditional) takes the past perfect ('If you had had / had gone / had eaten / etc... you would have been / seen / felt /etc.). Any reference to extent is irrelevant unless you are thinking of using a progressive form:

You would have another opinion if you had been having dealings with him for a longer time.
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Native English teacher at Mister Micawber's

[Palych]

Thank you. Please excuse me, I was not exact. I hope, these five sentences are possible.

"If he has a car, he will do it more quickly." (we do not know if he has a car)

"If he had a car he whould do it more quickly." (he has no any car)

"If he had had a car for some years he whould do it more quickly ." (he has had a a car for a shorter period)

"If he had had a car he whould have done it more quickly ." (about a situation in the past)

"If he had had had a car for a more long time he whould have done it more quickly ." (about a situation in the past as well)

[Mister Micawber]

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No, Palych-- you have 2 fallacious members of your paradigm.

"If he had had a car for some years he would do it more quickly ." (he has had a a car for a shorter period-- Perhaps, but that supposition is irrelevant. This is a mixed conditional: if he had had a car (in the past), he would do it more quickly (now) )

"If he had had a car he would have done it more quickly ." (about a situation in the past-- Yes, this is 3rd conditional )

"If he had had had a car for a more long time he whould have done it more quickly ." (about a situation in the past as well)-- No, as I said before, this is not a conditional; it is not a part of English grammar. Your learning is inaccurate here.
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Native English teacher at Mister Micawber's

[Palych]

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First I would like to make apologies to Morteza for my wrong remarks in a post above.

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"If he has had a car for some years he can do it quickly" - if the supposition: "he has had a car for some years" is right, we can expect that he will do it quickly "he can do it quickly".

"If he had had a car for some years he would do it quickly". Here we mean a hypothetical supposition - if "he has had a car for some years" were now actual, he would do it quickly. Is it wrong?

Now we move the previous situation into the past and get:
"If he had had had a car for some years he would have done it quickly". Is there any contradiction here?

[Mister Micawber]

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No, we cannot 'move into the past' with that sort of verb formation; it does not exist in English grammar.

"If he has had a car for some years he can do it quickly" - if the supposition: "he has had a car for some years" is right, we can expect that he will do it quickly "he can do it quickly".-- Yes. Conditional I.

"If he had had a car for some years he would do it quickly". Here we mean a hypothetical supposition - if "he has had a car for some years" were now actual, he would do it quickly. Is it wrong?--No, your interpretation is reasonable. Mixed Conditional III/II.

Now we move the previous situation into the past and get:
"If he had had had a car for some years he would have done it quickly". Is there any contradiction here?-- Yes, it is not English. Moving farther into the past, English continues to use the standard past perfect formation: 'If he had had a car for some years he would have done it quickly.' Conditional III.
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Native English teacher at Mister Micawber's

[Palych]

Thank you for your answer. Do I understand right that English does not really "feel" extent in such cases?

"If he had had a car he would have done it quickly"
"If he had had a car for some years he would have done it quickly"

[Mister Micawber]

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'For some years' of course adds detail regarding extent, but any such feeling is not realized in the verb form as such.
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Native English teacher at Mister Micawber's