I think I know the answer to this but I just want to be sure. I have a supervisor who doesn't have a good level of English; sometimes he worries me with his corrections.

I was writing:

Here, we will use Kukhtarev's model to describe the ...

But he corrected me:

Here, we will use the Kukhtarev's model to describe the ...

I know this is wrong. However, can someone confirm this and explain why.

  • Possibly related: english.stackexchange.com/q/438274 Commented Oct 5, 2019 at 9:22
  • I would accept the Kukhtarev model, personally, but making Kukhtarev possessive feels weird in "the Kukhtarev's model. We don't say "the pythagoras' theorem", but we've nounified his possessive name to pythagorean, which makes "the pythagorean theorem" correct.
    – user39425
    Commented Oct 7, 2019 at 4:24

4 Answers 4


In short:

The supervisor's edit is ungrammatical because it uses two Determiners within the same immediate noun phrase. As shown below, this is ungrammatical in modern English:

  • *the my car

The full story:

  1. the slimy dinosaurs

Noun phrases come in two chunks. They have a Determiner and a Head. In (1) above, the Determiner is the word the, and the Head is the phrase slimy dinosaurs.

The Determiner function is a grammatical relation. In other words, the term Determiner describes a job that a phrase or word carries out in a sentence. Examples of other functions are Subject, Object, Predicative Complement and so forth.

In the same way that Subjects are very often noun phrases, the Determiner function is very often carried out by a class of words called determinatives. These include words such as a, the, some,this, that, no and so forth:

  1. a/the/some/any/no dinosaur

However, in the same way many other types of word, phrase and clause can function as Subjects, other types of word and phrase can be Determiners. Of particular concern to us here, genitive pronouns and other genitive noun phrases can appear in Determiner function:

  1. [my] dinosaur - genitive pronoun

  2. [that man's] dinosaur - genitive noun phrase

Now the pertinent rule relating to the original poster's question is that standard English will only allow one Determiner in any given noun phrase. Examples (5—8) below are therefore ungrammatical:

  1. *the my dinosaur
  2. *any her dinosaurs
  3. *no those people
  4. *a John's friend

The Original Poster's Question

The Original Poster's noun phrase was:

(9) Kukhtarev's model

Here we see the genitive noun phrase (NP) Kukhtarev's in Determiner fnction within the larger NP. This is exactly analagous to:

(10) John's car

Now it is possible that the supervisor was aiming to change this to:

(11) the [Kukhtarev model]

Here, in (11), the word the is in Determiner function and Kukhtarev in contrast appears a modifier within the Head of the larger NP. The three possibilities here are that the supervisor did not notice the 's, that the supervisor made an incomplete edit and failed to delete the 's, or that the supervisor's knowledge of English is incomplete. We cannot know. In any case the resulting string after the edit is categorically ungrammatical because it has two Determiners in the one NP:

  1. *[the] [Kukhtarev's] model

Likewise so is the following:

  1. *[the] [John's] car

If we wanted to use both a definite article and a genitive noun phrase we could use an oblique genitive construction to correct these:

  1. the model of Kukhtarev's ...
  2. the car of Johns' ...

Lastly, to avoid confusion, and before anyone asks, there is one situation where we might see the word the followed by a word like Johns' or Smiths'. This is where the Determiner is a plural genitive noun phrase:

  1. [[the] Smiths'] car
  2. [[the] Johns'] car

In (16—17), the word the is not a Determiner within the larger noun phrase. Rather it appears within the smaller Determiner noun phrase as shown. In (16) we might be talking about a car belonging to Mr & Mrs Smith and similarly for (17) a car belonging to Mr & Mrs John. We can't use a definite article when we refer to a singular person using a proper noun like this. The reason is that we don't use articles when using a singular referential proper noun:

  1. *The John punched me - ungrammatical

If the word John were not a name, but a common noun, for example the venacular for a toilet, or a prositute's client (as mentioned by @Weather Vane), then there would be no problem with noun phrases like the following:

  1. [[The] john's] door was wide open.
  2. [[The] john's] car was parked outside.

In conclusion: the Original Poster needs to stick to their guns.

  • I'll not downvote this for lack of signs of research / attribution – there's obviously far more work been put into this answer – but there's a lot of the CGEL flavour here. Commented Oct 4, 2019 at 16:18
  • Would the OP understand the idiom "stick to their guns"?
    – Mari-Lou A
    Commented Oct 4, 2019 at 18:54
  • 2
    Excellent answer! The only improvement I see would be "[[the] Smith's] car", showing that "[the]" is the determiner in the possessive noun phrase "[the Smiths']", which is itself a determiner.
    – CJ Dennis
    Commented Oct 5, 2019 at 13:33
  • 1
    @EdwinAshworth This is all common knowledge and quite uncontentious, unless you're a generative linguist. I teach it to language students (not in this way, of course) every day. I wouldn't know who to attribute it to! – Commented Oct 5, 2019 at 15:09
  • 1
    Just as on (say) SO, attributions are not relevant on "explain" questions on this site. (If I explain how to do scrolling dynamic layouts or something on SO, there's no "attribution".)
    – Fattie
    Commented Oct 6, 2019 at 21:34

Short answer - you are right, your supervisor is wrong.

However he could have said

"Here, we will use the Kukhtarev model to describe the ..."

The possessive is not used in this version.

So it's either "Kukhtarev's model" or "the Kukhtarev model"


Peter Jennings answered part of the question. For the other part, if John is a person it should be

We went in John's car.

But you didn't use a capital letter, and if john is slang for a client it should be

We went in the john's car.

Of course, you would not use john to mean a reputable business client.

  • 1
    @Araucaria I was about to post on meta about this. But, I think it falls under the heading of this question I asked a few days back: english.meta.stackexchange.com/questions/13398/…
    – David M
    Commented Oct 4, 2019 at 16:57
  • @Araucaria you have edited the question 8 times in all, rendering this answer irrelevant. Commented Oct 6, 2019 at 17:51
  • @WeatherVane I'm sorry if that's so. I specifically rolled it back so that discussion of John would be relevant. Please do edit as you see fit. Nearly all the edits were about the close/reopen or tags or formatting :( I'm happyvwith whatever you think is best. Commented Oct 6, 2019 at 22:00

Kukhtarev's model ... yes
the Kukhtarev's model ... no
the Kukhtarev model ... yes

  • 9
    It may be correct, but it doesn't explain why it's correct.
    – Andrew Leach
    Commented Oct 4, 2019 at 13:49
  • @AndrewLeach Explaining why it's correct is the job of the Linguistics Stackexchange; papers can probably be written on it.
    – Kaz
    Commented Oct 6, 2019 at 17:32

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