English UsageComparison guide

Aim Doing vs. Aim To Do

Cambridge documents aim + to-infinitive for intention and aim at for directing effort toward an objective. Do not omit the preposition and present bare “aim doing” as equivalent to “aim to do.”

Quick answer

Use “aim to do” to state an intention. When an -ing form follows, the usual construction is “aim at doing,” where at is a preposition. Do not omit the preposition and present bare “aim doing” as equivalent to “aim to do.”

Key details

Confusion Familygrammar-and-usage distinction
Rule Familyverb complement pattern
TermsAim Doing, Aim To Do

Choose the right form

Decision table for Aim Doing vs. Aim To Do
MeaningConstructionExample
state an intentionaim + to-infinitiveaim to reduce errors
direct effort toward an activity/goalaim at + noun/-ingaim at reducing errors
bare aim + -ingnot the reviewed equivalentpreposition is missing

Quick tests

Intention test

Are you directly stating what someone intends to do?

If yes: Use “aim + to-infinitive.”

If no: If you use an -ing form, the documented pattern is normally “aim at + -ing.”

Caveat: Do not collapse “aim to do” and “aim at doing”: both can be standard, but they are different constructions.

Examples

Example

We aim to reduce processing time.

The to-infinitive states the intended action.

Example

The redesign aims at reducing unnecessary steps.

The -ing form follows the preposition “at.”

Incorrect

We aim reducing processing time.

Better: We aim to reduce processing time.

Bare “aim + -ing” omits the preposition required by the reviewed -ing pattern.

Further guidance

Boundary

Do not omit the preposition and present bare “aim doing” as equivalent to “aim to do.”

Construction

Cambridge documents aim + to-infinitive for intention and aim at for directing effort toward an objective.

Decision

Use “aim to do” to state an intention. When an -ing form follows, the usual construction is “aim at doing,” where at is a preposition.

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.

  1. aim — Cambridge Dictionary (opens in a new tab)Cambridge Dictionary · Aim + to-infinitive for intention; aim at construction boundary
  2. 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

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Cambridge documents both admit + -ing and admit to + -ing for acknowledging something. Other passive patterns such as “be admitted to be” are separate constructions.

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Agree Doing vs. Agree To Do

“Agree to do” expresses consent to take an action. An -ing form normally follows a preposition in patterns such as “agree with doing,” which expresses approval rather than the direct promise-to-act construction.

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Allow Doing vs. Allow Someone To Do

“Allow” can take an activity as its object, as in “allow smoking,” or a person/thing followed by a to-infinitive, as in “allow visitors to enter.” The patterns answer different structural questions: what is allowed versus who is allowed to do what.

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Appear Doing vs. Appear To Do

Cambridge describes appear as a linking verb and with a to-infinitive; a progressive action can sit inside that infinitive, as in “appears to be working.” An -ing form after appear can belong to another structure or sense, so “appear doing” is not a free alternative to “appear to do.”

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