Well, Go over this page and you will find important information about Type of Sentences... So, try to take notes..
This page contains definitions of simple, compound, and complex sentences with many simple examples. The purpose of these examples is to help the ESL/EFL learner to identify sentence basics including identification of sentences.
Definitions:
SIMPLE SENTENCE
A simple sentence, also called an independent clause, contains a subject and a verb, and it expresses a complete thought.
COMPOUND SENTENCE
A compound sentence contains two independent clauses joined by a coordinator. The coordinators are as follows: for, and, nor, but, or, yet, so. (Helpful hint: The first letter of each of the coordinators spells FANBOYS.) Except for very short sentences, coordinators are always preceded by a comma.