Be Impressed To Do vs. Impressed By Something
Be Impressed To Do vs. Impressed By Something distinguishes two directly documented complement patterns for the adjective “impressed.” Use impressed + to-infinitive for the directly documented infinitival construction; use impressed by/at/with + complement for the separately documented prepositional construction. The guide stays within those attested patterns and does not infer a broader rule from synonymy.
Use impressed + to-infinitive for the directly documented infinitival construction; use impressed by/at/with + complement for the separately documented prepositional construction.
Key details
Choose the right form
| Meaning / situation | Construction | Decision |
|---|---|---|
| positive reaction presented through an event/action | impressed + to-infinitive | use the documented infinitive construction when it fits the lexical context |
| source or object of the positive reaction | impressed by/at/with + complement | use a documented prepositional construction to name the source/object |
Quick tests
Event-or-source test
Are you presenting what someone was impressed to see/learn, or naming what impressed them?
If yes: Use the infinitive construction for the reviewed event pattern.
If no: Use “impressed by/at/with + complement” to name the source/object as appropriate.
Caveat: The prepositions are not automatically interchangeable, and the infinitive pattern should not be generalized beyond attested contexts.
Examples
I was impressed to see how clearly the process was documented.
The infinitive presents the event that prompted the reaction.
We were impressed by the clarity of the explanation.
“By” introduces the source of the positive reaction.
She was impressed with the final layout.
“With” can introduce the object of the reaction in the reviewed pattern.
Further guidance
Core difference
Use impressed + to-infinitive for the directly documented infinitival construction; use impressed by/at/with + complement for the separately documented prepositional construction.
Style Boundary
Treat this as a comparison of directly documented complement patterns, not as a claim that every other complement is impossible. Choose the construction that matches the intended grammatical relationship.
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.
- impressed — Oxford Advanced Learner’s Dictionary (opens in a new tab)Oxford University Press · Direct dictionary evidence for impressed + to-infinitive and impressed by/at/with + complement