The English imperative mood express commands, instructions, advice or requests. The imperative can be affirmative or negative.
- Stand up straight!
- Give me the details.
- Please take a seat.
- Don't sit down!
- Don't play on the computer.
- Don't tell her you're resigning yet!
In most imperatives, "you" (second person) is implied. However, you can also include yourself for a first person imperative (we) by using "let's" or "let's not" before the imperative.
- Let's have some lunch.
- Let's not tell him about that yet.