He'd behaved badly.是什么意思？

He'd behaved badly.

他表现得很糟糕。

behaved

v. （行为或举止）表现( behave的过去式和过去分词 )，工作，（使）守规矩；

例句
I was so badly behaved I was convinced she would be glad to see the back of me.
我的表现如此差劲，相信她会很高兴看到我离开。

badly

adv. 非常，在很大程度上，坏，拙劣地，不利地，有害地；

例句
He was badly concussed, the glass leaving two angry cuts across his forehead.
他遭受了严重的脑震荡，脑门上留下的两道被玻璃划破的口子已经红肿。