In which sentence does the underlined infinitive phrase function as a subject?
1)The commuters were excited to ride on the new high-speed trains.
2)The goal of the new train station is to move more trains from the station to the city.
3)To quickly move large groups of people is the purpose of public transportation.
To quickly move large groups of people is the purpose of public transportation. (3rd one)
Correct.
The commuters were excited to ride on the new high-speed trains.
To determine which sentence has an underlined infinitive phrase functioning as a subject, we need to identify the sentence that contains an infinitive phrase and where that phrase serves as the subject of the sentence.
Let's analyze the sentences provided:
1) The commuters were excited to ride on the new high-speed trains.
In this sentence, the infinitive phrase "to ride on the new high-speed trains" is present. However, it does not function as the subject of the sentence. The main subject is "the commuters," and the infinitive phrase serves as an object complement.
2) The goal of the new train station is to move more trains from the station to the city.
The infinitive phrase "to move more trains from the station to the city" is present in this sentence. It explains the purpose of the new train station. However, it doesn't function as the subject of the sentence. The main subject is "the goal of the new train station."
3) To quickly move large groups of people is the purpose of public transportation.
In this sentence, the infinitive phrase "to quickly move large groups of people" is the subject of the sentence. It directly answers the question "What is the purpose of public transportation?". Therefore, the correct answer is sentence number 3.