define: Simple Sentence - Complex Sentence - Compound Sentence - Compound-Complex Sentence
Simple Sentence: A simple sentence consists of just one independent clause with a subject and a verb.
Complex Sentence: A complex sentence consists of one independent clause and at least one dependent clause.
Compound Sentence: A compound sentence consists of two or more independent clauses joined together by coordinating conjunctions, punctuation, or both.
Compound-Complex Sentence: A compound-complex sentence consists of two or more independent clauses and at least one dependent clause.