I nees help with infinitive phrases and if it is a noun, adj., or adv. My question is:

The political prisoner refused to denounce his principles.

The infinitive phrase is to denounce his principles.

This phrase answers "what" after renounce. That means the phrase is a direct object. What part of speech is a direct object?

Is it a noun?

Yep. This infinitive phrase is a noun.

To determine whether the infinitive phrase in the sentence is functioning as a noun, adjective, or adverb, we need to understand the role it plays in the sentence.

In this sentence, the infinitive phrase is "to denounce his principles." We can identify its function by asking what it modifies or describes.

The infinitive phrase "to denounce his principles" modifies the verb "refused." It tells us why the political prisoner refused. Therefore, the infinitive phrase is functioning as an adverb.

To understand how to analyze infinitive phrases, here are the steps you can follow:

1. Identify the infinitive phrase: In this case, it is "to denounce his principles."

2. Determine how the infinitive phrase is functioning: Ask yourself what word it modifies or describes. In this sentence, it modifies the verb "refused," explaining the reason behind the refusal.

3. Classify its function: Based on its role in the sentence, label it as a noun, adjective, or adverb. In this case, the infinitive phrase functions as an adverb.

Remember that the function of an infinitive phrase can vary depending on its context in different sentences. So, it's essential to analyze each sentence individually.