* Go to the store and buy some milk. (You)
* Don't forget your keys. (You)
* Close the door behind you. (You)
* Let's go to the beach. (We)
* Be careful! (You)
* Pass the salt, please. (You)
* Help me with this box. (You)
* Open the window. (You)
* Clean your room. (You)
* Study for your test. (You)
Explanation
Imperative sentences are commands or requests. They are usually used to tell someone to do something.
* The subject is often implied (usually "you") and not explicitly stated.
* The verb is always in the base form (present tense).
Let me know if you'd like more examples or have any further questions.