* Verb (past participle): This is the most common usage. Example: "The meeting was attended by many people."
* Adjective: This usage describes something that was present or was given attention. Example: "The event was well attended."
* Verb (past tense): Used to indicate an action that happened in the past. Example: "I attended the concert last night."
To determine the part of speech, you need to analyze the sentence and how the word is used.