Offer Doing vs. Offer To Do
For the sense “volunteer to perform an action,” Oxford documents offer + to-infinitive. The verb also accepts ordinary objects, so an -ing form can be noun-like in some contexts without creating a balanced gerund-versus-infinitive choice.
Use “offer to do” when volunteering to perform an action. “Offer” can also take noun-like objects, but bare “offer doing” is not the ordinary equivalent of the volunteering pattern.
Key details
Choose the right form
| Meaning / situation | Form / construction | Decision |
|---|---|---|
| volunteer or propose that the subject will perform an action | offer + to-infinitive | Use “offer to do …”. |
| provide or make a thing/service available | offer + noun phrase | Use the noun/object pattern required by that meaning. |
| bare gerund used as though it were the volunteering complement | offer doing … | Do not use this as the ordinary substitute for “offer to do …”. |
Quick tests
Meaning / construction test
Does “offer” mean volunteer to perform the following action?
If yes: Use “offer to” plus the base verb.
If no: If “offer” means provide something, use its noun/object pattern instead of forcing the volunteering construction.
Caveat: This rule concerns the volunteering sense of “offer.” An -ing form can appear elsewhere in a larger noun phrase or different structure without creating the bare complement pattern “offer doing.”
Examples
Maya offered to carry the boxes upstairs.
The to-infinitive names the action she volunteered to perform.
The hotel offers free parking to guests.
Here “offer” takes a noun phrase meaning something provided.
He offered to review the draft before lunch.
The person volunteering the action is followed by a to-infinitive.
Further guidance
Decision
If the subject is volunteering to perform the following action, choose offer + to-infinitive.
Object Boundary
Offer also takes noun/object complements; keep those transitive uses separate from the “offer to do” volunteering construction.
To Infinitive
Use offer + to-infinitive to say that someone is willing to perform an action.
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.
- offer — Oxford Advanced Learner’s Dictionary (opens in a new tab)Oxford Learner’s Dictionaries · Offer to do for volunteering an action; offer also takes noun/object patterns
- Verb patterns: verb + infinitive or verb + -ing? (opens in a new tab)Cambridge Dictionary · Verb-complement patterns, including verbs taking -ing, to-infinitive, or both with meaning differences