not a bit of it

said when a situation or event is very different from what you expected

根本不是那样(指与预料完全不同)

I thought he would be sorry, but not a bit of it.

我原以为他会感到难过，但他根本没当回事。

I thought she would be glad to see him but not a bit of it — she made some excuse and left as soon as he got here.

我以为她见到他会很高兴，根本不是那么回事!她找了个借口，等他一到就走了。