1.lie的过去分词lain
我心里想着他们,彻夜未眠.
I have lain awake all night thinking of them.
2.lie的过去式lay
He lay down for a rest.
他躺下休息一会.
3.lay的过去式laid
He laid his failure to his lack of experience.
他把失败归咎于缺乏经验.
4.lay的过去分词laid
They laid down a number of rules.
他们制定了一些规则.