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Word Classes

and Word Forms

Vocabulary elements categorised by word class or part of speech (verb, noun, adjective etc), as well as by word form (contraction, prefix, suffix etc).

These pages deal mainly with vocabulary, for example word lists, meanings and sample sentences with words in use. But see also the grammar of parts of speech.

Traditionally, there are four major word classes (verb, noun, adjective, adverb) and four other word classes (preposition, pronoun, conjunction, interjection), making eight word classes (or parts of speech) in total. But note that some grammarians use different systems and may have nine or ten different word classes.


Verbs are action or state words like: run, work, study, be, seem
Regular Verbs - Irregular Verbs - Phrasal Verbs


Nouns are words for people, places or things like: mother, town, Rome, car, dog
Uncountable - Count/Noncount - Partitive


Adjectives are words that decribe nouns, like: kind, clever, expensive
Irregular - Personality


Adverbs are words that modify verbs, adjectives or other adverbs, like: quickly, back, ever, badly, away generally, completely
Adverbs of Manner - Place - Time - Degree


Prepositions are words usually in front of a noun or pronoun and expressing a relation to another word or element, like: after, down, near, of, plus, round, to
Prepositions List - Place - Time


Interjections have no grammatical value - words like: ah, hey, oh, ouch, um, well

Miscellaneous Word Forms


List of prefixes with examples in use: non-, inter-, post-


Lists of suffixes with quiz and examples in use: -ation, -al, -ize


Shortened forms of words and phrases, common in speech: I'm, aren't, here's, gonna

WH Question Words

The words we use to make question word questions: WHo, WHat, HoW
Without grammar very little can be conveyed; without vocabulary nothing can be conveyed.D.A. Wilkins, Linguistics in Language Teaching