agree with, agree to與agree on的用法

1. agree with
①表示同意某人或某人的意見、想法、分析、解釋等 (即持同一觀點)：
I don't agree with you. 我不同意你的意見。
They agreed with this idea. 他們同意這個想法。
I agree with what you say. 我同意你說的。
②表示“ (食物、天氣、工作等)對…適宜”：
The weather doesnot agree with me. 這種天氣對我不適宜。
Hard work does not agree with him. 艱苦的工作對他不適宜。
③表示“與…一致”：
A verb must agree with its subjectin person and number. 動詞必須和它的主語在人稱和數方面保持一致。
What he does does not agree with what he says. 他言行不一致。

2. agree to
①主要用來表示一方提出一項建議、安排、計劃等，另一方同意協作：
We agreed to their arrangement. 我們同意了他們的安排。
She agreed to marriage. 她同意結婚。
有時 agree to也可用來表示“答應”一件自己不愿做的事：
I was forced to agree to it, but at heart I didn't quite agree with it. 我被迫答應，但內心并不完全同意。

來源:可可英語 http://www.ccdyzl.cn/gaokao/201108/149747.shtml