Hello! I'd like to know if the following double contractions are used in the United States in daily conversation.

Contraction with will have (the future perfect tense):

I'll've = I'll have
You'll've = You'll have
We'll've = We'll have
He'll've = He'll have
She'll've. = She'll have
It'll've. = It'll have
They'll've =They'll have

won't've = won't have

And some contraction with have not (present perfect):

I'ven't = I haven't (+past participle)
You'ven't. = You haven't (+past participle)
We'ven't. = We haven't (+past participle)

And I'm not quite sure about these ones:

He'sn't = He hasn't(+past participle)
She'sn't = She hasn't (+past participle)
It's'n't = It hasn't (+ past participle)
They'ven't = They haven't (+past participle)

And this one that just came up to my mind

It'sn't = It's not/it isn't

I know those aren't written but, are those used in daily conversation? And I'd like to know if I may be provided with its pronunciations as well.

Thank you.

Question

Hello! I'd like to know if the following double contractions are used in the United States in daily conversation.

Contraction with will have (the future perfect tense):
 
I'll've               = I'll have
You'll've         = You'll have
We'll've          = We'll have
He'll've           = He'll have
She'll've.        = She'll have
It'll've.            = It'll have
They'll've       =They'll have

won't've         = won't have

And some contraction with have not (present perfect):

I'ven't           = I haven't (+past participle)
You'ven't.    = You haven't (+past participle)
We'ven't.     = We haven't (+past participle)

And I'm not quite sure about these ones:

He'sn't         = He hasn't(+past participle)
She'sn't       = She hasn't (+past participle)
It's'n't           = It hasn't (+ past participle)
They'ven't = They haven't (+past participle)

And this one that just came up to my mind

It'sn't = It's not/it isn't

I know those aren't written but, are those used in daily conversation? And I'd like to know if I may be provided with its pronunciations as well.

Thank you.

Answer

Ahhhhh my brain exploded! ;-)

Answer

I agree with Patricia that 'ven't and s'n't are not said. And even for the first items (I'll've – They'll've) I wouldn't necessarily call these contractions as much as just people speaking quickly. I suppose the "ha" in "have" gets swallowed a bit in "I'll have done it by tomorrow." But it's quite natural in English for one word to run into the next without a break when speaking.

Answer

Hi Lizbet,

The first part of your list, from I’ll’ve to won’t’ve… are definitely heard in conversational English (as you said, they’re not written). The rest of the items on your list- I don’t ever hear, nor would I ever say.

Hope that helps, Good question! 
Patricia

Answer

I agree with Sezme that the first items might not be true contractions (at least not yet). They just be a result of interpreting rapid, rather informal English. The rest of the list from "I'ven't" on down are never heard in my experience. I would not deliberately use them.

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