Pronominal object after a phrasal transitive verb
Incorrect: The fan is moving very fast; please turn down it.
Correct: The fan is moving very fast; please turn it down.
Note: "Turn down' is a transitive phrasal verb. Its nominal object can be used both after and before the adverbial particle. For example:
He turned down the fan. Or He turned the fan down.
But when the object is a pronoun, it cannot be used after the adverbial particle. The pronominal object always comes before the adverbial particle of the phrasal verb.
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