Is it natural to say 2 generations under him?
He needs to get off social media. Social media is for kids 2 generations under him.
Thank you
Not really. It would be better to say "kids two generations younger than him". It is good style to write small numbers in words: "two" rather than "2".
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Not really. It would be better to say "kids two generations younger than him". It is good style to write small numbers in words: "two" rather than "2".