Identifying Word Classes: The Role of "This"

The question asks us to determine the word class of the underlined word "this" in the sentence: "Would you like to buy (this) new item?" To answer this, we need to understand how "this" functions within the sentence.

Analysing the Sentence Structure

Let's look at the phrase where "this" appears: "this new item".

• "item" is the main noun, the thing being referred to.
• "new" is an adjective modifying "item", describing its quality.
• "this" comes before "new item" and seems to point to a specific item.

Words that come before a noun or a noun phrase (like "new item") and help to specify or quantify the noun are often determiners.

Understanding Word Classes

Let's consider the given options and see which one best fits the role of "this".

Determiner

A determiner is a word that introduces a noun and expresses a specific quantity or shows whether the noun is specific or general. Examples include articles (a, an, the), possessives (my, your, his), demonstratives (this, that, these, those), quantifiers (some, many, few), etc.

In the sentence, "this" points to a specific "new item". It tells us which specific item the speaker is referring to. This function aligns perfectly with the definition of a determiner, specifically a demonstrative determiner.

Conjunction

A conjunction is a word used to connect clauses, sentences, phrases, or words. Examples include 'and', 'but', 'or', 'because'. "This" does not connect any parts of the sentence in this way.

Interjection

An interjection is a word or phrase that expresses a sudden feeling or emotion, often followed by an exclamation mark. Examples include 'Oh!', 'Wow!', 'Ouch!'. "This" is not used to express emotion.

Adjective

An adjective is a word that describes or modifies a noun or pronoun, providing more information about its qualities or characteristics. Examples include 'happy', 'big', 'red'. While some words like "this" can sometimes function as adjectives (e.g., "This color is nice"), in the phrase "this new item", "this" is not describing a quality of the item like 'new' does. Instead, it is pointing out or specifying which item is being discussed. When "this" is used before a noun to specify which one, it acts as a determiner. When it acts as an adjective, it typically doesn't precede another adjective modifying the noun it itself modifies.

In "this new item", "this" specifies the noun phrase "new item". Its primary role is to determine which item, not to describe its characteristics. Therefore, "this" functions as a determiner here.

Comparing Determiner vs. Adjective Role for "This"

Consider these examples:

• This book is interesting. ("This" acts as a determiner, specifying which book)
• The book is this big. ("This" acts as an adverb modifying the adjective "big")
• This is my book. ("This" acts as a pronoun, replacing a noun)

In our sentence, "Would you like to buy this new item?", "this" clearly falls into the first category, acting as a determiner before the noun phrase "new item".

Based on its function in the given sentence, "this" specifies the particular "new item" being referred to, which is the role of a determiner.

Revision Table: Word Classes Reviewed

Additional Information: Demonstrative Determiners

Words like "this", "that", "these", and "those" are known as demonstratives. They can function as either determiners or pronouns depending on how they are used in a sentence.

• As Determiners: They appear before a noun or noun phrase and point to something specific.
  • Example: These apples are fresh. ("These" modifies "apples")
• As Pronouns: They stand alone and replace a noun or noun phrase.
  • Example: These are fresh apples. ("These" is the subject of the sentence, replacing "apples")

In the given sentence, "Would you like to buy this new item?", "this" is used directly before the noun phrase "new item", clearly acting as a demonstrative determiner.