Four Kinds of Sentences: Declarative, Interrogative, Imperative and Exclamatory

When people form sentences, they do many things, they ask questions, make requests, make statements, or they exclaim a powerful feeling or emotion. Because sentences convey statements, requests, strong emotion, and questions they can be categorized into four different types of sentences; declarative, interrogative, imperative, and exclamatory.

Declarative sentences in the English language are the sentences that form a statement;

Tomorrow I will go to the store.
Yesterday I left school early.
I told her to wear the blue skirt.
She did not want to eat the pizza that I gave her.
We walked to the mall together.

Interrogative sentences in the English language are the sentences that form a question;

What do you think I should wear the pink shoes or the white sneakers?
What did the teacher say to you yesterday?
Did you go to the movies yesterday?

Imperative sentences in the English language are the sentences that make a command or request;

Get me some water.
Leave that cat alone.
Go to the store for me.
Bring me some ice.

Did you know that many people assume that imperative sentences have no subject when they really do, the subject of imperative sentences is always you, since in these type of sentences, the person that is making the command or request is always asking you to do something. For this reason, the subject in imperative sentences is called you (understood) because, all though the subject may not be visible in the sentence, it is understood that the subject is always you.

To get a clearer understanding, check these sentences out;

(You) get me some water.
(You) leave the cat alone.
(You) go to the store for me.
(You) Bring me some ice.

Exclamatory sentences in the English language are the sentences that attempt to powerful feelings, or emotions;

I'm leaving!
I can not wait to graduate!
I love you so much!
We beat that other team good!
I can't believe how tall giraffes really are!
I can't believe this, I am so upset!