1. I’m a 26 year old guy who hasn’t watched X...
  2. I’m a 26 year old guy who haven’t watched X... Which one would be accurate?
  • 3
    Can you see the difference between "I'm a 26-year old who hasn't watched X" and "I'm 26 and haven't watched X"? Hint: it has to do with the person (1st, 2nd, 3rd) that verb must take to match the subject of the clause. Does that help or hurt?
    – user105719
    Dec 21, 2019 at 5:32
  • I'm afraid that would be confusing @user105719. Finding the subject is a difficult task for a learner. Also, you mention the category of person (1st, 2nd, 3rd),which is only relevant in case of pronoun. So the only pronoun here is "I". So does that mean the correct answer is neither "haven't" nor "hasn't", but "am not"? Dec 21, 2019 at 7:20
  • @user178049 Do you really think finding the subject of a clause is too difficult for a learner? It's hard for me to judge since I'm a native speaker, but without knowing the subject, the right form of the predicate will be impossible to discern. I have/you have/he has (1st, 2nd, 3rd). Notice that I is singular, but the verb form wouldn't be hasn't. The key here is that who, although it refers to a first person pronoun, takes a third person verb.
    – user105719
    Dec 21, 2019 at 7:41
  • 1
    @user178049 I'm gonna try one more time to explain and then leave the field. Otherwise, I find myself turning into that internet guy who has to have the last word, and I don't like that guy. The deciding factor between the present forms of verbs is person, although this happens only in the singular. If number were the factor, then singular first person and singular third person, having the same number, should have the same form for their verbs, but they don't. It's I have but he has.
    – user105719
    Dec 21, 2019 at 20:08
  • 1
    Does this answer your question? Subject-verb-agreement Dec 23, 2019 at 18:03

2 Answers 2


The relative pronoun "who" is linked to the noun phrase "a 26-year-old guy", which is singular. So the correct verb to use is "hasn't".


Who has? I have.

Who has it? I have it.

Don’t be confused by the contractions “hasn’t” and “haven’t.”

Here, who works just like she, he, or it. It’s a third person singular relative pronoun. There are no plural subjects in your sentence.


I have, you have.

She has, he has, it has, who has.

So to answer your question:

✔️ Correct:

I am a guy who has a shirt.

I am a guy who has many shirts.

I am a guy who wears many hats.

I am not a guy who has been arrested.

I am a knight who has not been defeated.

Who can be plural.

Who is plural when it refers to more than one person. Then it takes “who have”, like “they have”.

✔️ Correct:

The teachers who have quit are Alice, Bob and Carl.

The only teacher who has been fired is David.

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