约有20个宾补动词（多由不及物动词变成）表示人的动作，后面常跟自身代词：

They talked (or sang )themselves ill(or hoarse);drank themselves drunk;ate themselves sick; slept themselves sober;read themselves asleep;cried(or wept)themselves blind;laughed themselves red in the face(or hoarse);shouted themselves hoarse;walked themselves lame;striped themselves naked;danced themselves weary,wept themselves sober; studied themselves silly.

请问老师，如何理解这些句子的意思？