There are several expressions that use the verb “to agree” followed by a preposition.
1) To agree with – to accept an idea or another person’s point of view, to be in accord; also, to be compatible, pleasing, or congruent.
I agree with you that a multilateral well might be a good option in this case.
Thai food doesn’t agree with me.
Make sure your verb agrees with the subject of your sentence.
2) To agree to – indicates one person’s willingness to do something, to volunteer, to give consent.
I agreed to serve as a judge for the SPE Student Paper Contest.
3) To agree about – to have the same opinion of something.
We agree about religion, but disagree about politics.
4) To agree on or upon – to come to an understanding about what should be done, to accept stipulations or terms, usually after negotiation.
We have agreed on the features and functionalities, but not the price.
They finally agreed upon a settlement during mediation.
The British often leave off the “on” or “upon,” which according to Webster is correct usage.
The jurors were unable to agree a verdict.
This makes me cringe, being the Yankee that I am. When editing, I usually put a preposition back in.
It’s usually OK to have a dangling preposition at the end of a sentence with these expressions,
particularly in spoken English.
Those are the contract terms and deliverables you agreed to.
That’s one bill that Democrats and Republicans will never agree upon.
He’s a person I simply cannot agree with.
“He’s a person with whom I simply cannot agree” sounds really stuffy; however, if that
is the impression you want to leave, then by all means, use it.
When two or more people “are agreed,” they are in agreement.
Are we agreed? (= Do we agree?)
They were all agreed that the specification needs to be updated.
Something is “agreed to be” a certain way if many believe that it is true.
Julian is widely agreed to be one of the best software programmers in the company.
Like the hyphenated adjectives we have discussed lately, agreed-upon can be used to modify a
Grammar is an agreed-upon set of rules for constructing sentences.