Grammar pedants… has or have?

[Felixfriend]

Sorry it’s not really an aibu, just need a quick grammar answer and google is not helping!!

What is correct when responding to somebody who has apologised for being slow:

Not at all, it is I who HAS been a slow responder

Not at all, it is I who HAVE been a slow responder

I know it’s not the greatest sentence in the world, but grammatically - is it has or have? Or something else entirely? Both feel wrong!

Thanks

Please don't apologise, I am the one who has been slow!

Have been. Have is used with I, we, you, they. Has is used with she, he, it.

Using language correctly doesn’t make you a grammar pedant!

I’d suggest a slightly different sentence construction, for example;

Not at all, it was me who was slow to respond.

”no need to apologise, I’ve not been efficient at progressing this either.”

It is me who has been slow to respond

@bailarbailar <- What BB said

Not at all, it is I who HAVE been a slow responder.

or

Not at all, I am the one who has been a slow responder.

or less formally

It is me who has been slow to respond.

@ParvuliThankYouDebbie What you say is correct so far as conjugation/declension is concerned but is not relevant to the sentence as constructed by the OP, where “I” is the object of the sentence (and, as an aside, should really be “me”).

The second one is correct because it's "I have". It's a bit of a clunky sentence though.

Here is a good explanation:

www.thesaurus.com/e/grammar/it-is-i-vs-its-me/

has

As I understand it, the only object in the sentence is "responder". "I" is a subject pronoun, not an object. Happy to be corrected if that's not right though

Sorry I quoted the wrong post

Meant to quote this one.

Isn't the object 'the one' hence HAS?

‘Not a all, I have been slow to respond’

That’s what I thought.

Yes!

Has.

It is me who has been the slow responder.

(As has been said, the sentence is a bit clunky, though.)

Thanks for your help - and for the improved sentence structures!