This document provides an overview of the key components of English grammar. It defines English grammar as the study of word forms and structures, phrase and sentence arrangements, sounds, and meanings. It then classifies English grammar into four main parts: orthography, etymology, syntax, and prosody. Each part deals with a different linguistic element such as letter combinations, word classes and changes, sentence structure, and speech/reading. The document also provides brief definitions and examples of common grammatical terms like nouns, adjectives, verbs and verb tenses, determiners, punctuation, relative clauses, and differences between English and Spanish grammar.