Sentence Improvement: Pronoun Agreement Explained

The original sentence given is: "The questions are so simple that a child can understand it."

We need to examine the underlined segment "can understand it" and determine if it needs substitution to make the sentence grammatically correct and clear.

Analyzing the Original Sentence

The subject of the second part of the sentence is "a child". The verb phrase is "can understand". The object of the verb is the pronoun "it". This pronoun "it" refers back to the noun phrase "The questions".

Identifying the Grammatical Issue

In grammar, pronouns must agree in number with the noun they refer to (their antecedent). In the original sentence, the antecedent is "questions", which is a plural noun. However, the pronoun used to refer to "questions" is "it", which is a singular pronoun.

This creates a problem of pronoun-antecedent agreement. A singular pronoun ("it") cannot correctly refer to a plural noun ("questions"). Therefore, the pronoun "it" must be replaced by a plural pronoun.

Evaluating the Options for Substitution

Let's look at the given options:

• Option 1: Can understand them

  Here, the pronoun is "them". "Them" is a plural pronoun and correctly refers to the plural noun "questions". The structure "can understand" is appropriate for expressing ability.

• Option 2: Can understand this

  Here, the pronoun is "this". "This" is a singular demonstrative pronoun. It cannot correctly refer to the plural noun "questions".

• Option 3: Is understanding them

  Here, the pronoun "them" correctly refers to the plural noun "questions". However, the verb phrase "is understanding" is in the present continuous tense. The original sentence implies a general truth or ability ("can understand"). The present continuous tense suggests an action happening right now, which doesn't fit the meaning of the sentence.

• Option 4: No improvement

  As discussed, the original sentence has a pronoun agreement error ("it" referring to "questions"). Therefore, improvement is needed.

Selecting the Most Appropriate Option

Comparing the options, Option 1 "Can understand them" correctly uses a plural pronoun ("them") to agree with the plural antecedent ("questions") and maintains the appropriate modal structure ("can understand") to express ability.

Thus, the most appropriate option to substitute the underlined segment is "Can understand them".

Revision Table: Pronoun Agreement Key Points

Understanding pronoun agreement is crucial for correct sentence structure. Here's a quick summary:

• Pronouns replace nouns.
• A pronoun must agree in number (singular/plural) with the noun it replaces (the antecedent).
• Singular antecedents require singular pronouns (e.g., student...he/she/it).
• Plural antecedents require plural pronouns (e.g., students...they/them).

Additional Information: Pronoun Types and Usage

Pronouns come in different types. In this question, we focused on personal pronouns and their agreement with antecedents. Some common personal pronouns include:

• Singular: I, me, you, he, him, she, her, it
• Plural: we, us, you, they, them

Correctly matching the pronoun's number, person, and gender (where applicable) with its antecedent is a fundamental rule in English grammar. Errors in pronoun agreement can make sentences unclear or grammatically incorrect, as seen in the original sentence.