This document discusses sentences and clauses. It defines a sentence as containing a subject, verb, and predicate, ending with a full stop. A clause is a group of words containing a subject and verb but not forming a complete sentence. Examples are provided to illustrate the difference between sentences containing one clause and those containing multiple clauses. Conjunctions like "and", "but", and "or" are discussed as connecting clauses within sentences. The temporal conjunctions "when", "before", and "after" are explained as introducing time clauses to indicate when the main clause occurs. Several exercises provide practice using these temporal conjunctions in sentences.