To do something to someone or something or not to do something to someone. That is the question. And it is the source of the confusion between lie and lay. The strength of this worksheet is in the clear, cogent explanation for the difference between the intransitive verb lie and the intransitive verb lay. The explanations are precise, the examples fully illustrate the proper forms, and a table conjugates both verbs. The worksheet concludes with a practice set of sentences.