Idiomatic English WordNet 3.0 & Open English WordNet

The inclusion or omission of definite articles follows idiomatic norms in each language and depends on context and intent. Wiktionary

In English, the only idiomatic position for a pronoun as the object of a phrasal verb is before the particle, whereas a noun as object can fall either before or after the particle; thus only he picked them up but either he picked his tools up or he picked up his tools . Wiktionary