Mary is lying over there.
Mary lies there every day.
Mary lay there all day yesterday.
Mary has lain there all day.
Mary is laying a book on the table.
Mary lays a book on the table every day.
Mary laid a book on the table yesterday.
Mary has laid a book on the table.
Mary is lying about who stole the hammer. [not telling the truth]
Mary lies quite often.
Mary lied about who stole the hammer.
Mary has lied often about it.
CJ