There are 8 parts of the speech in English that will help us understand a sentence structure enhance our understanding and comprehension when speaking and reading English. These 8 parts are:
1. Noun 2. Adjective 3. Pronoun 4. Verb 5. Adverb 6. Conjunction 7. Preposition 8. Interjection.
A 9th category could be also added with the articles.