Here's why:
* Clarity: Minor parts of speech like prepositions, conjunctions, and interjections help clarify relationships between words and ideas. They show how things are connected, how actions happen, and what the overall meaning is.
* Precision: These parts of speech allow for precise communication. For example, using different prepositions can subtly shift the meaning of a sentence. "He walked around the block" is different from "He walked through the park."
* Nuance: Minor parts of speech can add subtle layers of meaning and emotion. For example, different conjunctions convey different relationships between ideas. "He left, and I was sad" is different from "He left, but I was sad."
Let me know if you want to explore specific examples!