Here's why:
* Subject: The person or thing performing the action.
* Direct Object: The person or thing that receives the action of the verb.
Example:
* Command: "Close the door."
* Subject: You (implied)
* Direct Object: The door
In this example, "you" (the implied subject) are being commanded to perform the action of "closing" and the "door" is the receiver of that action.
Let me know if you have any other questions.