head off造句

He carried on telling a joke, laughing his head off.
他继续讲笑话，自己笑得前仰后合。

They dragged him to the village square and chopped his head off.
他们将他拖到村里的广场上，把他的头砍了下来。

I laughed my head off when I heard of his discomfiture.
听到别人说起他的狼狈相,我放声大笑.