* Pronoun: It refers to a noun or noun phrase previously mentioned.
* Example: "I saw the dog, that one." (Refers to "the dog")
* Determiner: It modifies a noun, indicating a specific thing or person.
* Example: "That book is interesting."
* Conjunction: It joins clauses, often introducing a dependent clause.
* Example: "I knew that she was right."
* Adverb: It modifies a verb, adjective, or another adverb, often indicating distance or degree.
* Example: "He lives that far away?"
To determine the part of speech, you need to look at the context of the word in the sentence.