THE SENTENCE

A group of words that makes complete sense is called a sentence.
Example:
color blue favorite is My. (makes no sense, therefore it is not a sentence)
My favorite color is blue. (makes complete sense, therefore it is a sentence) There are four kinds of sentences:
1. Assertive or declarative sentence (a statement)
2. Imperative sentence (a command)
3. Interrogative sentence (a question)
4. Exclamatory sentence (an exclamation) 
1. An assertive sentence is a sentence that states a fact. Such sentences are simple statements. They state, assert, or declare something.
Examples:
Jan is a student. She lives in a big city. 
2. Imperative sentence is a sentence which gives a command, makes a request, or express a wish.
Examples:
Go to your room. (an order)
Please lend me your book. (a request)
Have a good time at the picnic. (a wish) 
3. Exclamatory sentence is a sentence that expresses sudden and strong feelings, such as surprise, wonder, pity, sympathy, happiness, or gratitude.
Example:
What a shame!
Boy, am I tired! 

4. Interrogative sentence: A sentence that asks a question is called an interrogative sentence.
Examples:
What is your name?
Where do you live?