Lew2nl: Those irregular verbs are confusing. The easiest way for the high school kids to catch on was to tell them that the verb 'lay' means to 'put' or 'place'. (lay, laid, have laid, laying). “He laid the book on the table yesterday.” “Please lay the book on the table now.” 'He is laying the book on the table at this time.” The verb 'lie' means to 'rest' or to be in a 'reclining' or resting position. (lie, lay, have lain, lying) “I'm going to lie on the couch.” 'I lay on the couch earlier today.' I have been lying on the couch too long; it seems as if I have lain here all day.'" Full comment below.

Question: Are you good at grammar?