Identify the underlined word in the sentence: The old man was tired of walking.

Question

Accepted Answer

The underlined word "walking" in the sentence "The old man was tired of walking" is correctly identified as a gerund. Here is a detailed explanation supporting this classification:

1. **Explanation for Option 1 (Gerund):**
   - A gerund is a verb form that ends in "-ing" and functions as a noun in a sentence. In this sentence, "walking" is the object of the preposition "of," which is a role typically played by a noun. The phrase "tired of walking" indicates that "walking" is the activity that the old man is tired of, thus functioning as a noun. Therefore, "walking" is correctly identified as a gerund.

2. **Explanation for why other options are incorrect:**

- **Option 2 (Participle):**
     - A participle is a verb form that can function as an adjective, modifying a noun or pronoun. For example, in the phrase "the walking man," "walking" would be a participle because it describes the man. However, in the given sentence, "walking" does not describe a noun; instead, it acts as a noun itself, making it a gerund, not a participle.

- **Option 3 (Infinitive):**
     - An infinitive is the base form of a verb, often preceded by "to," such as "to walk." Infinitives can function as nouns, adjectives, or adverbs. In the sentence, "walking" is not in its base form and is not preceded by "to," so it cannot be an infinitive.

- **Option 4 (Noun):**
     - While gerunds function as nouns, the term "noun" typically refers to a word that is inherently a noun, such as "man" or "book." "Walking" is derived from the verb "walk" and is specifically a gerund because it retains its verb-like properties while functioning as a noun. Therefore, it is more accurately described as a gerund rather than a simple noun.

In conclusion, the underlined word "walking" is best classified as a gerund because it functions as a noun in the sentence, fulfilling the role of the object of the preposition "of." This supports Option 1 as the correct answer.