agree 用法难点
① agree to do sth.表示“同意做某事”。
We agreed to help them with their studies. 我们同意帮助他们学习。
She agreed to speak at the meeting. 她同意在会上讲话。
② agree on/upon sth.表示“对……取得一致意见”，指参加协商的人或单位经过商定后，对某个问题达成一致意见或具有相同看法，后常跟日期、条件、价格、计划、行动等。
They have agreed on the date for the next meeting. 他们已就下次会议的日期达成了协议。
They couldn't agree upon the price. 他们对于价格不能取得一致意见。
They all agreed on making an early decision. 他们都同意早做决定。
We have agreed on the price for the villa. 我们已就那幢别墅的售价达成一致。
The whole family agreed on the island for their holiday. 全家商定去那个岛上度假。
We agreed on putting the meeting off. 我们同意把会议延期。
=We agreed to put the meeting off.
③ agree to sth.表示“同意，赞成”对方提出的建议、计划、要求等（plan，suggestion，request，scheme，etc.）。
He agrees to the plan. 他同意这项计划。
She doesn't agree to this arrangement. 她不同意这项安排。
The manager has agreed to your request. 经理已经同意你的要求。
They don't agree to the arbitration of the court. 他们不同意法院的调解。
Her father has agreed to engaging herself to John. 她父亲已经同意她同约翰订婚。
④ agree with表示“同意，赞成”某人，或同意某个看法、意见、问题（somebody，one's view，etc.）。
All of us agree with her opinions. 我们大家都同意她的意见。
I can't agree with him/his views. 我不能同意他/他的看法。
The two brothers don't quite agree with one another. 这兄弟俩意见不太一致。
You ought to agree with her that smoking will do harm to you. 你应该赞同她的意见，吸烟会伤害你的身体。
提示
agree with还表示“（食物、气候、药品、衣服等）适合，适宜，与……一致”，主语必须是物。
The food there didn't agree with me. 我不适应那儿的食物。
The coat doesn't agree with her. 这件外衣她穿不合身。
⑤ agree with sb. on/about sth.表示“在某方面或某个问题上与某人看法一致”。
I agree with him on that matter. 我在那个问题上与他的看法相同。
I don't agree with you about the question. 关于这个问题，我和你的看法不同。
Teachers rarely agree about the method of teaching. 关于教学方法，教师很少能够取得一致。
They never agree about politics. 他们的政见总是不同。
⑥ agree+that从句表示“同意，赞同”。
I agree that we should spend more time on reading. 我赞同我们应花更多的时间进行阅读。
He agreed that he would help me with the work. 他同意帮助我做这项工作。
⑦ agree+what/who从句表示“同意，赞同”。
They could not agree who should speak at the meeting. 他们对谁在会上发言意见不一致。
They didn't agree what should be done next. 他们对下一步该做什么意见不一致。
⑧ agree单独使用，表示“同意，通过，答应”，可作及物动词或不及物动词。
He will never agree. 他不会同意的。
The arrangement has been agreed. 这项安排被通过了。
比较
I agree her to do the work.
（不可说agree sb. to do sth.）
I agree that she should do the work. 我同意她做那项工作。
I agree going there.
（agree后不可跟动名词）
I agree to go there. 我同意去那里。