Please check my answer(s) for me. I don't think I understand what adverbs, adjectives, or nouns are in infinitve phrases.

Directions: Write the infinitive or infinitive phrase from each sentence. Then write noun, adjective, or adverv to identify its function in the sentence.

1. People have always sought to protect their rights. Infinitive phrase: To protect their rights, adverb

The whole sentence is, "People have always sought to protect their rights."

I think the infintive part of the sentence is: To protect their rights.

So instead of an adverb, wouldn't it be an adjective since its describing the sentence more clearly?

Correct!

It's not an adverb.

What kind of word answers "what?" after a verb?

http://www.grammarly.com/handbook/grammar/nouns/2/uses-of-nouns/

Ms. Sue is right. I goofed. Sorry.

Oh wait, let me check that site Ms. Sue. I just saw you posted it. And thanks for trying to help guys.

answers

The site doesn't work

Your answer for the infinitive phrase is correct. "To protect their rights" is the infinitive phrase in the sentence. However, the function of the phrase is not adverbial.

In this sentence, the infinitive phrase functions as an adjective. It modifies the noun "People" by providing additional information about what they have always sought.

So, to check your answer again:

1. Infinitive phrase: To protect their rights, Function: Adjective

I have taught English grammar for many years. And yes, please check that site.

You're welcome.