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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。