Такой знакомый и, на первый взгляд, такой простой глагол agree! Но, как всегда, такой "хитрый", надо быть оченгь внимательным с ним. В данном документе предложены 10 вариантов употребления этого глагола.
Признаюсь: данная информация изначально была напечатана в "блоге", но мне кажется, она не получила завлуженного внимания. В любом случае, пусть она будет

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«Meaning of the verb AGREE»

1) If you agree with :-) about / on something = you have the same opinion as them.
We all agreed that we needed to improve our English. (note: this means ‘We all agreed with each other that we needed to improve our English.’)
My husband and I agree about /on most things.
2) If you agree to do something, = you say you will do something that someone asks you to do.
She agreed to help him
3) If you agree to something, = you give your permission for it.
His father agreed to the idea of a big birthday party
4) If two or more people agree on something, or agree to do something = it means that they decide something together.
We couldn't agree on what to buy.
5) If two or more parties agree something = it means that they reach a formal agreement about it.
The government agreed a plan to tackle the economic crisis.
6) If two descriptions of something agree, = they are the same.
I have heard several versions of this story, but none of them agree
7) In grammar if a subject and verb agree, = it means they have the correct grammatical form.
8) If you agree with something, = you think that it is morally acceptable.
Many people don’t agree with cruelty to animals.
9) If a type of food or drink does not agree with you, = this means that it makes you feel a bit ill!
That seafood did not agree with me. I think I need to lie down!
10) If something agrees with you, = it makes you feel good or healthy.
You look very well! Life in the countryside obviously agrees with you.