Parts of Speech: The Building Blocks

Level A1 · Sentence Basics

Every word in English belongs to a category called a part of speech, also called a word class. It tells you the word's job in the sentence — naming something, doing something, describing something, and so on. Learning these categories gives you a map for the rest of grammar, because most grammar rules are really instructions about one part of speech: adjectives go before the noun they describe, and verbs change form to show tense.

The 8 core word classes, with one example each:

• noun – names a person, place, thing, or idea: dog, London, happiness
• verb – shows an action or a state: run, is, think
• adjective – describes a noun: a happy dog
• adverb – describes a verb, an adjective, or another adverb, often answering how: she runs quickly
• pronoun – replaces a noun: he, it, they
• preposition – shows how a noun relates to the rest of the sentence, often place or time: on the table
• conjunction – joins words or clauses: and, but, because
• interjection – expresses a short reaction or emotion on its own: Wow!, Ouch!

A small group of words — a, an, the, this, these — are called articles or determiners; some grammars treat them as their own word class, others group them with adjectives, so don't worry if different books label them differently. What matters more for a beginner is this: many English words are not fixed to one part of speech. The same word can be a different part of speech depending on how it is used in the sentence. "run" is a verb in I run every day (it shows an action) but a noun in I went for a run (it names a thing). Checking a word's job in its own sentence, not just the word by itself, is the only reliable way to identify its part of speech.

The most common mistake is confusing adjectives and adverbs, especially after a verb that describes how someone does something: She sings beautiful and He drives careful are both wrong, because "beautiful" and "careful" are adjectives, which describe nouns, not verbs. The sentence needs an adverb instead. Say She sings beautifully, He drives carefully. A second frequent error is guessing a word's part of speech only from its ending. The suffix -ly usually signals an adverb (quickly, slowly), but some adjectives also end in -ly (a friendly dog, a lovely evening), so the ending is only a clue, never a rule. Always check what the word is doing in its sentence.

There is no single trigger word for a part of speech. The reliable check is to ask what job a word is doing in that exact sentence. Is it naming something (noun), showing an action or state (verb), describing a noun (adjective), or describing a verb, adjective, or adverb (adverb)? Is it replacing a noun (pronoun), linking a noun to the rest of the sentence (preposition), joining parts of the sentence (conjunction), or standing alone as a reaction (interjection)? Once you can answer that question, you know the part of speech.

Practice

Identify the Part of Speech · Same Word, Different Job & Adjective vs Adverb