Forget or leave?

We sometimes use forget when we don’t remember to bring something with us:

• I’ll have to go back; I’ve forgotten my car keys.

We use leave with this same meaning, but only if we mention the place where we left something:

• Mia, you’re always leaving your car keys on your desk.

• Not: … forgetting your car keys on your desk. or … you’re always leaving your car keys.

• I left my homework at home.

• Not: I forgot my homework at home.

We use leave when the action is deliberate:

• We decided to leave the dog at home.