The document defines three types of sentences: simple sentences containing one independent clause, compound sentences containing two or more independent clauses joined with coordinating conjunctions or semicolons, and complex sentences containing one independent clause and at least one dependent clause. Examples are provided for each sentence type to illustrate their structures.

1. SIMPLE SENTENCE
Contains one independent clause (a noun + a verb) and no dependent clauses.
Form:
Subject + Predicate
Ex. George is fast.
COMPOUND SENTENCE
Contains two independent clauses.
Forms:
Independent Clause + ; + Independent Clause
Ex. George can run 60 miles per hour; I think he is very fast.
Independent Clause + Coordinating Conjunction + Independent Clause
Ex. George can run 60 miles per hour, so I think he is very fast.
Independent Clause + ; + Conjunctive Adverb (transition word) + , + Independent
Clause
Ex. George can run 60 miles per hour; therefore, I think he is very fast.

2. COMPLEX SENTENCES
Contains an independent clause and at least one dependent clause.
Forms:
Independent Clause + (no punctuation) + subordinate clause
Ex: George can run 60 miles an hour because he is very fast.
Subordinate Clause + , + Independent Clause
Ex: Because he is very fast, George can run 60 miles per hour.