Dear Redkiddy, If it is a preposition, it modifies an object, and must stay with the object. If it is an adverb, it modifies the verb, and may move to the end of the clause. Kind regards, Goldmund
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Redkiddy
Dear friends and moderators,
As you might know I have been learning English for a long time, look at this question.
You know phrasal verbs are mostly formed with verb+preposition ,,,
So in this usage the prepositions are named as adverb. Look at this sentences...
He waved and drove off..........................off here is