agree to/agree with/agree on(up on)用法区别是什么

agree to/agree with/agree on(up on)用法区别是什么？
I.agree to“同意、应允”通常用于同意某件事情（我们可以同意我们自己有不同看法而并不赞同的事情)。如：
① Do you agree to this plan?
② He agreed to my proposal.他同意了我的提议。
③ I agreed to his terms.我同意了他的条件。
Ⅱ.agree with“同意、赞同”常常表示同某人意见一致，也可表赞同某件事情。还有“（气候、食物等）适合”之意。如：
1.I quite agree with you.我很同意你。
2.Do you agree with me?
3.I agree with all you say.我同意你所说的。
4.His words do not agree with his actions..他言行不一致。
5. Too much meat doesn't agree with her. 吃太多肉对她身体不合适。
[注]：agree with不能用于被动语态。
Ⅲ.agree on/upon“对…取得一致意见”指两方或多方就某个问题取得了一致的意见或达成了某种协议。如：
①After discussion the two sides agreed on a cease-fire.经过讨论，双方就停火问题达成了协议。
②They all agree on the plan.他们对这个计划意见一致。
[注]：此句型可转换成agree in doing sth..如：
①All of them agreed on/upon it..=All of them agreed in doing it.他们对做这个问题达成了共识。