Step 1: Understanding the Concept:
To convert an assertive sentence in the simple present tense into a negative sentence, we use the auxiliary verb "do" or "does" followed by "not" and the base form (infinitive) of the main verb.
Detailed Explanation:
Let us analyze the grammatical structure of the given sentence:
- Sentence: "This shop sells imported cloth items."
- Subject: "This shop" (third-person singular noun).
- Verb: "sells" (simple present tense, singular form).
For a third-person singular subject, the negative structure is:
\[ \text{Subject} + \text{does not (doesn't)} + \text{Base Verb (V}_1\text{)} + \text{Object} \]
- Using this rule, "sells" becomes "does not sell" or "doesn't sell".
Let us evaluate the options:
- Option (A) uses "don't", which is grammatically incorrect for a singular subject ("don't" is used for plural subjects and 'I/you/we/they').
- Option (C) and (D) use incorrect auxiliary verb combinations ("is not sell" and "is being not sell").
- Option (B) correctly uses "doesn't sell" with the singular subject "This shop".
Step 2: Final Answer:
The grammatically correct negative sentence is Option (B).