Behind As A Preposition

Behind means at or in the rear of.

• The boy was hiding behind a bush.
• The driver sits behind the wheel.
• The old man lagged behind.
• We were left behind when the bus went. (= The bus went without us.)

Behind can also mean not making good progress, late and similar ideas.

• John is behind other boys of the same age.
• He is behind with his rent.