English grammar is the set of rules that govern how words are used and combined to form sentences in the English language. It includes various components such as nouns, verbs, adjectives, and adverbs, which help convey meaning and structure in communication. Understanding English grammar is essential for effective writing and speaking. It helps ensure clarity and coherence, allowing speakers and writers to express their ideas accurately. Key elements include sentence structure, punctuation, and the correct use of tenses, which all contribute to the overall effectiveness of language.