Understanding Active and Passive Voice Conversion

The question asks to transform a sentence from active voice to passive voice. The given sentence is "Did you not buy the return tickets to Dehradun?". This sentence is in the past simple tense, it's a question (interrogative), and it's negative.

Let's first understand what active and passive voice mean:

• Active Voice: The subject performs the action. Structure typically follows: Subject + Verb + Object. Example: You bought the tickets.
• Passive Voice: The action is performed on the subject (which was the object in the active voice). Structure typically follows: Object (becomes Subject) + Be verb (in correct tense) + Past Participle of Main Verb + by + Subject (becomes Object). Example: The tickets were bought by you.

Converting Past Simple Interrogative Negative to Passive Voice

The structure of the active voice sentence is: Did + Subject + not + Base Form of Verb + Object?

To convert this to passive voice, we need to follow these steps:

1. Identify the Object in the active sentence. This will become the Subject in the passive sentence.
2. Identify the Tense (Past Simple). The 'be' verb in the passive voice must be in the past simple tense ('was' or 'were').
3. Determine if 'was' or 'were' is needed based on the new subject (the original object). Use 'was' for singular subjects and 'were' for plural subjects.
4. Use the Past Participle form of the main verb.
5. Include 'not' after the 'be' verb because the original sentence is negative.
6. Add 'by' followed by the original subject (which becomes the object in the passive voice).
7. Keep the interrogative structure (start with the 'be' verb).

Applying the Steps to the Sentence

Let's break down the sentence "Did you not buy the return tickets to Dehradun?":

• Subject: you
• Main Verb: buy (Base Form)
• Object: the return tickets to Dehradun
• Tense: Past Simple
• Type: Interrogative Negative

Now, let's convert it to passive voice:

1. The Object "the return tickets to Dehradun" becomes the new Subject.
2. The tense is Past Simple, so we need 'was' or 'were'.
3. The new subject "the return tickets to Dehradun" is plural ('tickets'). So, we use 'were'.
4. The Past Participle of 'buy' is 'bought'.
5. The sentence is negative, so we include 'not'.
6. The original subject 'you' becomes the object after 'by': 'by you'.
7. Start with the 'be' verb ('Were') to maintain the interrogative structure.

Putting it together, the passive voice sentence is: Were the return tickets to Dehradun not bought by you?

Evaluating the Options

Let's look at the given options and compare them to our derived passive sentence:

1. Was the return tickets to Dehradun not bought by you?

   This option uses 'Was' instead of 'Were'. The subject "the return tickets" is plural, so 'Was' is incorrect. This option is wrong.

2. Were the return tickets to Dehradun not being bought by you?

   This option uses "were being bought", which is the structure for Past Continuous Passive voice (e.g., "Were the tickets not being bought?"). The original sentence is Past Simple, not Past Continuous. This option is wrong.

3. Had the return tickets to Dehradun not bought by you?

   This option uses "Had...bought", which is the structure for Past Perfect Passive voice (e.g., "Had the tickets not been bought by you?"). The original sentence is Past Simple, not Past Perfect. Also, the verb form is incorrect (should be "had...been bought"). This option is wrong.

4. Were the return tickets to Dehradun not bought by you?

   This option correctly uses 'Were' for the plural subject "the return tickets", includes 'not', uses the past participle 'bought', and follows the structure for a Past Simple interrogative negative passive sentence. This option matches our derived sentence.

Based on the analysis, option 4 correctly expresses the given sentence in passive voice.

Revision Table: Key Voice Change Concepts

Additional Information on Sentence Voice Conversion

Changing voice is a common transformation in English grammar. It allows us to shift the focus of a sentence. The original active subject often appears in a 'by' phrase in the passive voice, but it can be omitted if the doer is unknown, unimportant, or obvious.

Remember that only sentences with a transitive verb (a verb that takes an object) can be converted into the passive voice. Intransitive verbs (verbs that do not take an object, like 'sleep', 'walk', 'arrive') cannot form a passive voice sentence.

Understanding the correct form of the 'be' verb and the past participle is crucial for accurate voice transformation in different tenses.