Meaning: This sentence describes a man performing a job or task at a place where people work.
Choice of Words: The word "works" is used to describe the activity of doing a job or task, while "office" is a place where people work.
Alternative Expressions
The man goes to the office.
Meaning: This means that the man is traveling to his place of work.
Choice of Words:Man is a person, usually an adult male. Goes is a verb that means to move from one place to another. Office is a place where people work. When you put them together, "The man goes to the office" means that the man is moving from one place to another place where he works.
The man is working at the office.
Meaning: This means that the man is currently doing his job at his place of work.
Choice of Words:Man is a person, usually an adult male. Is working is a verb that means to do a job or task. Office is a place where people work. When you put them together, "The man is working at the office" means that the man is doing a job or task at the place where he works.