Robert lives in an apartment.
Subject : Robert ; Verb : lives ; Object/where : in an appartment. (Object of place)
He loves his job.
Subject : He ; Verb : Loves ; Object/what: his job.
His wife teaches college courses.
Subject : His wife ; Verb : Teaches ; Object/what: College courses.
They work in the mornings.
Subject : They ; Verb : work ; Object/When: in the mornings. (Object of time)