that confession <is> worthless if the sergeant hadn't caught your mistake

VicNicSor

Banned
Russian
— Let's start with the Kristov murder.
— It was an amazing solve. I got him to confess in 20 minutes.
— You also mislabeled the evidence, so that confession is worthless if the sergeant hadn't caught your mistake.
Brooklyn Nine-Nine, TV series

Either "would have been" or "would be" would be correct. The IS is understandable, but still, grammatically incorrect. Am I right?
Thank you.
 
  • Chez

    Senior Member
    English English
    Yes, in spoken language it would not be noticed. But, yes, it is also wrong.

    Either of the tenses you suggest would work. You could also use the simple past (was).
     
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