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Prepositions after verbs

Using prepositions with “pledge”

Pledge is most commonly followed by to. Other prepositions appear in specific meanings or fixed expressions.

Quick answer

Main patterns with pledge

Use pledge to for promises and commitments. Pledge for is less common and usually relates to support or fundraising contexts. On, in, and by are not standard fixed complements after pledge.

The company pledged to reduce emissions.
She pledged support for the campaign.
They pledged to help rebuild the town.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
pledge to + action

Making a commitment

To introduces the action or goal promised.

The mayor pledged to improve public transport.
2
pledge support for + cause

Showing support

For often follows a noun such as support or loyalty.

Several groups pledged support for the proposal.
3
pledge by + date

Adding a deadline adjunct

By usually introduces a time limit, not a fixed verb pattern.

They pledged to finish the work by June.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
pledge to
She pledged to donate regularly.
standard pattern for promises
pledge for
They pledged support for the charity.
used with support or donations
pledge on
They pledged on their honour.
on can introduce the basis of an oath, not a common complement
pledge in
He pledged in writing to repay the loan.
in introduces manner or form
pledge by
The team pledged to respond by Friday.
by introduces time

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using on as the main complement

Pledge normally takes to for commitments.

✕ She pledged on reduce costs. ✓ She pledged to reduce costs.

Confusing for and to

Use to before verbs and for after nouns like support.

✕ They pledged for help rebuild the school. ✓ They pledged to help rebuild the school.

Quick practice

Choose the expression that matches the intended meaning.

1. The company pledged ___ cut waste.
2. Several donors pledged support ___ the museum.
3. He pledged to reply ___ Monday.

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Frequently asked questions

Is “pledge for” common?

It is mainly used with nouns such as support, loyalty, or donations.

Can “pledge on” be correct?

Sometimes. It may introduce the basis of a promise, such as “on my honour.”

What is the most common pattern?

Pledge to plus a verb is the standard structure for commitments.

pack-with-in-into-for, on paint in, on, with, by or for? "park in" or "park at"? "partake in" or "partake of"? pass through, by, on, in or to? pave with, in, by, for or to? pay for, to, by, in or on? "peddle by" or "peddle to"? "peek at" or "peek into"? "peel off" or "peel for"? "pee on" or "pee in"? "peer into", "peer through" or "peer at"?

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