Language affords the means as well as the evidence of intelligence. Whoever acquires the knowledge and use of a new word acquires, also, the idea for which that word stands, and adds that much to his mental capacity. A man who cannot write or dictate a letter expressed in clear language and in correct form will rarely be entrusted with the management of a business enterprise. It is with this in mind that this text has been written, aiming primarily to provide a comprehensive guide to the proper teaching of English to be used in a commercial paradigm. A great text for English teachers with this in mind, this rare text is also a must-have addition to any discerning collection of linguistic texts. Chapters contained herein include: Parts of Speech, The Sentence, The Complements, The Object Complement, Misuse of Adjectives and Adverbs, Phrase Elements, Wrong Use of Pronouns, et cetera. This text was originally published in 1920 and is proudly republished here with a new introduction to English grammar.