agree with sb about/on (doing) sth e.g.He agreed with them about the need for change.
It is/was agreed (that) +从句
agree to let sb do sth
---摘自牛津高阶英汉双解词典It is/was agreed (that) +从句你这这句话是被动语态吗？是 e.g. It was agreed that we should hold another meeting .补充：sb be agreed on/about (doing) sth