There are three ways in which a separable phrasal verb is commonly used:
1. The noun is put in the middle of the phrasal verb:
Rie took her coat off when she entered the classroom.
2. The noun is put at the end of the phrasal verb:
Rie took off her coat when she entered the classroom.
3. The pronoun is put in the middle of the phrasal verb:
Rie wore a coat today, but she took it off when she entered the classroom.
The one form that is not considered natural is putting the pronoun at the end of a separable phrasal verb:
Rie wore a coat today, but she took off it when she entered the classroom.
Inseparable Phrasal Verbs . . . . . . . . . 分離できない句動詞
Some phrasal verbs do not take an object, so they do not need to be separated. The phrasal verb take off, for example, has a different meaning when it does not have an object.
My plane will take off at 10:00 tomorrow morning.
