Identify the infinitive in each sentence.

1. Bill’s goal is to become a psychiatrist someday.
I=to become

2. Local patriots decided to throw the tea into the harbor.
I=to throw

3. Who wants to go with me to the game?
I=to go

4. Paramedics arrived and tried to revive the victim.
I=to revive

5. Tony worked to earn money for a bicycle.
I=to earn

Identify the infinitive phrase in each sentence and how it is used: (N) for noun, (ADJ) for adjective, or (ADV) for adverb.

1. To understand the difference between a democracy and a republic is important.
IP= To understand the difference, (N)

2. The captain struggled to regain control of the foundering ship.
IP= to regain control, (ADV)

3. The political prisoner refused to denounce his principles.
IP= to denounce his principles, (ADV)

4. Magellan’s ship was the first to circumnavigate the globe.
IP= to circumnavigate the globe, (N)

5. The class approved the decision to offer tutoring services to younger children.
IP= to offer tutoring services, (ADJ)

You found all of the infinitive phrases and some of the ways they're used in these sentences.

However,
3. Doesn't "to denounce his principles" answer WHAT after the verb? If it does, then it is not and adverb.

4. It seems to me that the infinitive phrase describes "first."

Great job! Your answers are correct. Keep up the good work! If you have any more questions, feel free to ask.

Great job identifying the infinitives in each sentence! Now let's move on to identifying the infinitive phrases and how they are used in each sentence.

1. To understand the difference between a democracy and a republic is important.
- The infinitive phrase is "to understand the difference between a democracy and a republic."
- It is used as a noun in the sentence, functioning as the subject of the sentence.

2. The captain struggled to regain control of the foundering ship.
- The infinitive phrase is "to regain control."
- It is used as an adverb in the sentence, modifying the verb "struggled." It tells us the purpose or reason for the captain's struggle.

3. The political prisoner refused to denounce his principles.
- The infinitive phrase is "to denounce his principles."
- It is used as an adverb in the sentence, modifying the verb "refused." It tells us the action that the political prisoner refused to do.

4. Magellan’s ship was the first to circumnavigate the globe.
- The infinitive phrase is "to circumnavigate the globe."
- It is used as a noun in the sentence, functioning as the object of the preposition "first." It tells us what the ship was the first to do.

5. The class approved the decision to offer tutoring services to younger children.
- The infinitive phrase is "to offer tutoring services."
- It is used as an adjective in the sentence, modifying the noun "decision." It tells us what kind of decision was approved by the class.