put过去式是put，sleep过去式是slept，例如：

1、I slept very little last night.昨晚我几乎没怎么睡。

2、He can't have slept through all that noise.他不可能在那种闹哄哄的环境里睡好觉。

3、How long can a human being go without sleep?人不睡觉能活多久