Prepositions after verbs

How to use 'ratify' with prepositions

Ratify usually means formally approve an agreement, decision, or treaty. It often appears without a following preposition.

Quick answer

Common uses of 'ratify'

Ratify normally takes a direct object: ratify an agreement. By can introduce the approving body in passive structures. In and on usually introduce context or time expressions. According and as are not standard combinations directly after ratify.

The senate ratified the treaty
The agreement was ratified by parliament
The decision was ratified in 2024
The proposal was discussed on Monday

Choose the pattern by meaning

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

1
ratify + agreement or decision

Approving something formally

Ratify commonly takes a direct object with no following preposition.

The council ratified the policy
Members ratified the contract
2
ratified by + authority

Naming the approving authority

By introduces the group or institution that gave formal approval.

The amendment was ratified by voters
The treaty was ratified by the senate
3
ratify in + context or time

Adding location or time information

In usually introduces a place, year, or document context rather than forming a fixed combination.

The measure was ratified in 2023
The rules were ratified in a special session
4
ratify as + role or status

Limited and formal use

As may appear when something is officially confirmed in a role or status, although confirm is often more natural.

The assembly ratified him as chairperson
The appointment was ratified as valid

See the difference in context

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

Construction
Example
Meaning
ratify by
The agreement was ratified by both countries.
by names the approving authority in passive voice
ratify in
The treaty was ratified in 1998.
in introduces time or context
ratify on
The bill was ratified on Friday.
on introduces a date or day expression
ratify according
The phrase 'ratify according' is not standard English.
use according to in a separate clause instead
ratify as
The board ratified her as director.
formal but possible when assigning or confirming a role

Common mistakes

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

Using 'according' directly after 'ratify'

According does not normally follow ratify directly.

✕ The committee ratified according the rules. ✓ The committee ratified the rules according to the charter.

Adding unnecessary prepositions

Ratify often works directly with an object.

✕ They ratified on the agreement. ✓ They ratified the agreement.

Confusing passive and active structures

By is mainly used in passive voice.

✕ Parliament ratified by the treaty. ✓ The treaty was ratified by parliament.

Quick practice

Choose the expression that matches the intended meaning.

1. The senate ratified ___ treaty yesterday.
2. The agreement was ratified ___ both governments.
3. The law was ratified ___ Monday.

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Frequently asked questions

Does 'ratify' usually need a preposition?

No. It commonly takes a direct object directly, such as ratify a treaty.

Is 'ratify according' correct?

No. Use according to in a separate phrase instead.

Can 'ratify as' be used?

Yes, in formal contexts when confirming someone in a role or status.

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