lie behind (someone or something)
1. To be positioned behind someone or something. The gym lies behind the school.
2. To be in the past. Don't be concerned about what lies behind you, only what lies ahead. Everything that lies behind us is what makes us who we are—the good and the bad.
lie behind someone or something
1. [for something] to be positioned to the rear of someone or something. A wide expanse of water lay behind the sentry, and a narrow roadway lay in front. A vast field lies behind the house.
2. [for something] to be in someone's or a group's past. Now that all of our difficulties lie behind us, we can get on with our business. The busy season lay behind the company and people could take their vacations.