Twenty One Century English Grammar : LAP Lambert Academic Publishing : 9786206158790 : 6206158799 : 21 Apr 2023 : The twenty one century english grammar book is a tremendous, huge and complet grammar reference. It is devided by four parts: first parts of speech such as nouns, pronouns, verbs, adjectives, adverbs, prepositions, conjunctions. Other parts of speech such as particles, determiners, gerunds, and interjections. The second part is inflection such as conjugation, tense, aspect, mood, voice, speech. The third part is declension such as gender in nouns, plurals etc... The fourth part is syntax that is the arrangement of words in sentences, clauses, phrases, and the study of the formation of sentences and the relationship of their component parts. Furthermore, it is full of examples, quizzes, and exercises that intended to be instructional as well as testing devices.