英语语法分析

He glanced guiltily over his shoulder.

他内疚地向后瞥了一眼。

《柯林斯英汉双解大词典》

Did they behave guiltily?

他们表现出内疚了吗？

And, look around your office, most cube workers are guiltily of bad posture.

看看你的办公室，最有立体感的人都有着糟糕的姿势。