Word classes are parts of speech. They’re the building blocks that form every sentence ever uttered. They are categorized by the role they play in your sentences.
Everyone agrees on the following four main word classes: 1. Noun 2. Verb 3. Adjective 4. Adverb
There are varying opinions as to whether the following five categories are word classes or word forms. So we went straight to the experts: the Oxford and Cambridge Dictionaries. Per these two highly learned sources, the following are considered word classes also:
- Pronoun (e.g. I, you, me, we, mine, someone, he, she)
- Preposition (e.g. at, in, on, across, behind, for)
