i am of the opinion that 怎么用

of the opinion that +同位语从句（表示opinion 的具体内容）
认为…,相信…;主张
I am of the opinion that we should do it at once
我认为我们得马上做这件事
Bill is of the opinion that the results of professional wrestling matches are fixed.
比尔相信,职业摔跤角比赛的结果是预先安排的.