Be Glad To Do vs. Glad About Something
Cambridge directly records glad + to-infinitive and glad about + noun/event, so the guide contrasts those documented structures rather than inferring a new complement.
Use “glad to do something” when glad is followed by an infinitive action. Use “glad about something” when the complement names the situation or event that produces the positive feeling.
Key details
Choose the right form
| Meaning / situation | Construction | Decision |
|---|---|---|
| pleasure, willingness, or positive reaction expressed through an action | glad to + verb | use the infinitive before the action |
| positive feeling directed toward a matter or event | glad about + noun phrase | use “about” before the matter |
Quick tests
Action-or-matter test
Are you expressing gladness through an action/willingness, or about a named matter?
If yes: Use “glad to + verb” for the action.
If no: Use “glad about + noun phrase” for the matter or event.
Caveat: The constructions overlap in broad emotional territory but are not mechanically interchangeable.
Examples
I am glad to help with the review.
The infinitive expresses willingness or pleasure in taking the action.
We are glad about the result.
“About” introduces the matter producing the positive feeling.
She was glad to hear the update.
The infinitive can introduce an event that prompts the reaction.
Further guidance
Core difference
Cambridge documents glad + to-infinitive and glad about + noun/event as standard complement patterns.
Style Boundary
Do not treat to and about as interchangeable markers: to introduces an infinitive, while about introduces the matter or event.
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.
- Glad (opens in a new tab)Cambridge University Press · Direct learner-dictionary evidence for glad about + noun/event and glad + to-infinitive.