Parts of speech
Learn to classify words by what they do in a sentence, not only by memorising isolated definitions.
The main word classes#
English sentences are built from words that perform different jobs. Nouns name people, places, things, or ideas. Pronouns stand in for nouns. Verbs express actions, events, or states. Adjectives modify nouns, while adverbs commonly modify verbs, adjectives, or other adverbs.
Prepositions show relationships such as place, time, or direction. Conjunctions connect words, phrases, or clauses. Determiners, including articles, help identify nouns. Interjections express a brief reaction.
Function depends on context#
Do not classify a word by appearance alone. In “We went for a walk,” walk is a noun. In “We walk daily,” it is a verb. The surrounding structure reveals its job.
Ask practical questions:
- What is the sentence about?
- Which word expresses what happens or what is?
- Which words add detail?
- Which words connect ideas or show relationships?
Build a sentence#
In “The careful learner checks every answer,” learner is the noun, checks is the verb, careful is an adjective, and every is a determiner. Removing a modifier may reduce detail, but removing the main noun or verb usually breaks the core clause.
Common mistakes#
Treating every -ly word as an adverb
Many adverbs end in -ly, but words such as friendly and lovely are usually adjectives.
Confusing meaning with function
A word may refer to an action yet function as a noun: “Regular practice helps.” Classify the grammatical job it performs here.
A reliable check#
Analyse the whole sentence before assigning labels. Word classes are useful because they explain structure and help you make deliberate grammar choices.
Key points
- A word class describes how a word functions in a particular sentence.
- Nouns and pronouns name or refer to people, places, things, and ideas.
- Verbs express actions, events, or states, while modifiers add detail.
- Some words can belong to different classes in different contexts.