Фразовые глаголы

English prepositions and postpositions are the same in form but different in function. Some prepositions are not used as postpositions, e.g., at, for, from, into, onto, of, with. Some postpositions are not used as prepositions, e.g., ahead, apart, aside, away, back, forward. But some of them can function as prepositions or postpositions depending on the structure in which they are used, e.g., about, across, along, around, behind, by, down, in, off, on, out, over, through, under, up. It is necessary to understand the difference between them.

Phrasal Verbs: Introduction
Prepositions and postpositions
Verbs with prepositions and nouns
Short List and Main List