Phrasal Verbs
Do not treat every verb followed by a short word as the same structure. English also has prepositional verbs and phrasal-prepositional verbs. For a specific expression, check its dictionary entry for meaning, transitivity, and whether an object can appear between the verb and particle.
A phrasal verb combines a verb with an adverb particle, as in “take off,” “look up,” or “give in.” Its meaning and word-order behavior are lexical: some are separable, some inseparable, some transitive, and some intransitive.
Key details
Important caveats
Boundary
Do not invent a universal separation rule. “Look up the number” and “look the number up” work, but many multi-word verbs do not allow the same movement.
Further guidance
Diagnostic
Identify whether the second word behaves as a particle belonging to the verb rather than a preposition heading its own complement.
Word Order
For transitive separable phrasal verbs, a noun object may often go before or after the particle, while a pronoun object commonly goes between them; verify the individual verb.
Worked Example
“Please look up the address” uses the phrasal verb “look up.” With a pronoun, “Please look it up” is natural, whereas “look up it” is not.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Phrasal verbs and multi-word verbs (opens in a new tab)Cambridge University Press · Defines phrasal verbs as verb-plus-particle combinations and distinguishes them from prepositional and phrasal-prepositional verbs, including idiomatic meaning.
- Mechanics Introduction (opens in a new tab)Purdue Online Writing Lab · Maintains a dedicated Two-Part (Phrasal) Verbs resource, confirming a stable learner task distinct from general preposition or verb guidance.