• Bunnylux@lemmy.world
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      10 hours ago

      It’s correct as written. Think of it like “see this through” or taught this “through and through”. You can say “taught this through” to mean, “taught this completely/well”.

      • Ada@lemmy.blahaj.zone
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        9 hours ago

        I’ve never seen anyone use a singular “through” as a synonym for “thoroughly”. Maybe it’s a regional thing?