The imperative is very simple. Just use the base form of the verb (Lesson 14). We do not usually write or say the subject of an imperative sentence, but we understand it is 'you' (singular or plural).
AFFIRMATIVE AND NEGATIVE EXAMPLES: AFFIRMATIVE:
Heat the milk.
Do not feed the animals.
Don't be angry!
Do not overheat.
An imperative sentence means that we want someone to do, or not to do, something.
REDUCE SPEED NOW (a road sign)
KEEP OFF THE GRASS (in a park)
DO NOT LEAN OUT OF THE WINDOW (on a train)
FASTEN SEAT BELTS (on a plane)
Bake for thirty minutes. Do not overcook.
Turn right at the traffic lights and then take the second turn on the left.
EXAMPLE: Wake up! It's half past eight.
EXAMPLE: Don't forget the book tomorrow.
Come in and sit down! [welcoming]
Have a seat! [offering]
Let's have a break now. [suggesting]
Don't worry! [sympathizing]
NOTICE: To be polite, add please to the end of the sentence:
Wait a minute, please.
Fasten your seat belts, please.
NOTICE: To show that you want something very much, put do or please at the beginning of the sentence:
Do show me!
Please tell me!
Do let's go!
Please be careful!