EnglishClub : Learn English : Grammar : Parts of Speech Parts of Speech What is a Part of Speech ? We can categorize English words into 9 basic types called " parts of speech " or "word classes". It's quite important to recognize parts of speech . This helps you to analyze sentences and understand them. It also helps you to construct good sentences. Learn about parts of speech with simple explanations and examples to master grammar and improve your writing skills fast. Learn the nine parts of speech in English with definitions, examples, and video lessons. Find out how to classify words according to their functions in sentences and why determiners are different from adjectives.