1.We are in agreement on/about/upon that point.
在那一点上我们意见一致.
2.But also to be in agreement on/about/upon a common goal.
更是在某个共同目标上希望能达到共识.
3.My family are not in agreement on/about/upon where to go.
对于去哪里我们家人持不同意见.
4.My parents are in agreement on/about/upon what color to paint the house.
我父母亲对于用什么颜色“漆”房子意见一致.