The English interjection is one indispensable part of speech which adds mood and feeling to English expressions. It helps English speakers and writers add emotions to their English expressions. Unfortunately, large percentage of English learners are yet to master the correct and appropriate use of this important part of speech. Fortunately, the book, "THE RUBRICS OF ENGLISH GRAMMAR: INTERJECTION" has been written to completely demystify the functions, purpose and uses of the English interjection. Every English learner, who wishes to master the functions of the English interjection, as well as its technical and intrinsic use will find this book a very useful resource for present and future reference and study. Welcome on board!