disagree后面介词用on还是about?agree呢？

on 和 about都可以用。一样的。
disagree on/about sth
disagree with sb

disagree
KK: []
DJ: []
vi.
1. 不一致,不符[(+with)]
Our answers to the problem disagreed.
我们对这个问题的回答不一致。
2. 意见不合;有分歧[(+with/on)]
We disagreed on which movie to see.
我们对看哪一个电影意见不一致。
3. 争论,争执[(+on/about)]
The two neighbors disagreed bitterly about their boundary line.
这两个邻居在住房界线问题上剧烈争吵。
4. (食物,天气等)不适宜,有害[(+with)]
Strawberries disagree with me.
我一吃草莓就不舒服。

agree
KK: []
DJ: []
vi.
1. 意见一致[(+with/about/on)][W]
I don't agree with Phil on many things.
我和菲尔在许多事情上意见不一致。
2. 同意,赞同[(+to)]
I think we should stop; do you agree?
我觉得我们该停止了,你同意吗?
3. 相符[(+with)]
This bill does not agree with your original estimate.
这张帐单与你当初的估计不符。
4. 相宜,适合[(+with)]
Seafood doesn't agree with me.
我不适宜吃海鲜。
5. 和睦相处
Why can't you agree together?
为何你们不能在一起友好相处?
vt.