I am working with a test prep guide that states the following:

incorrect: John picked up one of the balls that was on the lawn. correct: John picked up one of the balls that were on the lawn.

Question: Why does the phrase “that…lawn” modify “balls” and not “one”? Is there a rule we can apply?

  • 2
    Because "one" is an abstract concept that can't be "on the lawn". – Dan Bron Jan 20 '18 at 2:18
  • 1
    The balls had all fallen out of the basket. John gathered most of them from the flowerbeds. Then John picked up one of the balls that was on the lawn. He put all of the balls back in the basket. – Nigel J Jan 20 '18 at 3:48

What you want to know is the antecedent of the relative pronoun that, which will determine whether the verb in the relative clause is was or were. This hardly sounds like rocket science, except for a grammar rule one is tempted to misapply here.

One of the roughly hundred students who were to be awarded a certificate at yesterday's ceremony was unfortunately stranded at the airport.

At some point in our schooling, we were bombarded with sentences with partitive constructions like this where the conjugated verb is so far from the word one that it's easy to forget the verb must be singular and not plural for students. So the rule we internalized tells us "one of many = singular verb."

In your example, however, there were multiple balls on the lawn and other balls elsewhere. Otherwise the clause would be non-restrictive. Of these balls that were on the lawn, John picked up one, yielding:

John picked up one of the balls that were on the lawn.

I can read this sentence any number of times and it still sounds wrong. That's because the rule I mentioned earlier involuntarily kicks in. Using was here is a hypercorrection: applying a grammar rule drilled into our heads by an army of English teachers in a situation where it doesn't apply.

The other factor is that a normal mortal would likely say:

John picked up one of the balls on the lawn.

and be done with it.


I thought the general principle was if there is doubt about what the antecedent of a pronoun is, then assume it means the one mentioned most recently. In this case, 'the balls' seems to have been mentioned more recently than 'one of the balls', so you would need 'were', not 'was'. BTW, I'm kind of hoping others might comment on whether my reasoning is correct.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.