in my book 它的意思其实就是in my opinion 以我的看法，通常用在你对某事有强烈的意见时。 She's never lied to me, and in my book that counts for a lot. 她从没跟我撒过谎，在我看来这非常重要。 You kissed a girl, even though you have a girlfriend. That's cheating in my book, dude. 即使你有女朋友，你还是吻了那个女孩。在我看来这就是劈腿，伙计。