1. Noun – person, school, book, language
2. Pronoun – he, she, it, they
3. Verb – run, speak, eat, understand
4. Adjective – beautiful, big, Thai, different
5. Adverb – quickly, well, fluently, very
6. Preposition – in, on, at, with, from, through
7. Conjunction – and, but, or, because
8. Interjection – oh!, hello!
