The document discusses different types of clauses and sentences. There are two main types of clauses: independent clauses which can stand alone as a complete thought, and dependent clauses which cannot stand alone and require an independent clause. Sentence types include simple sentences with one independent clause, compound sentences with two or more independent clauses, complex sentences with one independent clause and one or more dependent clauses, and compound-complex sentences with two or more independent clauses and one or more dependent clauses. Common subordinating conjunctions are listed.