Understanding Active and Passive Voice

Voice in grammar refers to the form of a verb that shows whether the subject of the sentence performs the action (active voice) or is acted upon (passive voice).

In the given sentence, "We have chosen the colour of the new car we want to buy," the subject is "We," and it performs the action of "chosen." This is an example of active voice.

Converting Active Voice to Passive Voice

To convert an active voice sentence to passive voice, follow these steps:

1. Identify the subject, the verb, and the object of the active sentence.
2. Make the object of the active sentence the subject of the passive sentence.
3. Change the verb into the passive form. The structure for the passive form depends on the tense of the original verb. The general structure is "be" + past participle of the main verb.
4. The original subject can be included in the passive sentence using the phrase "by" followed by the subject (e.g., "by us," "by him," "by them"). This part is optional if the doer of the action is not important or is unknown.

Analyzing the Given Sentence

Let's break down the sentence: "We have chosen the colour of the new car we want to buy."

• Subject: We
• Verb: have chosen (This is in the Present Perfect tense)
• Object: the colour of the new car we want to buy

The tense of the verb "have chosen" is Present Perfect active.

Forming the Passive Voice for Present Perfect Tense

The structure for Present Perfect passive voice is:

Subject (new) + have/has been + past participle (of the main verb) + (by + original subject)

Applying this to our sentence:

• New Subject: "The colour of the new car we want to buy" (This long phrase acts as a singular subject, so it takes "has").
• Passive Verb: "has been chosen" (Present Perfect passive of "chosen").
• "By" phrase: "by us" (from the original subject "We").

Putting it all together, the passive form is: "The colour of the new car we want to buy has been chosen by us."

Evaluating the Options

Let's look at the provided options and compare them to the correct passive structure we derived:

• Option 1: "The colour of the new car we want to buy is being chosen by us."

  This uses the verb structure "is being chosen," which is Present Continuous passive. This does not match the original Present Perfect tense ("have chosen"). Therefore, this option is incorrect.

• Option 2: "The colour of the new car we want to buy had been chosen."

  This uses the verb structure "had been chosen," which is Past Perfect passive. This does not match the original Present Perfect tense ("have chosen"). Also, it omits the "by us" phrase, though the main error is the tense. Therefore, this option is incorrect.

• Option 3: "The colour of the new car we want to buy can be chosen by us."

  This uses the modal verb structure "can be chosen." The original sentence does not contain a modal verb like "can." Converting a sentence with a simple tense to a modal passive is incorrect. Therefore, this option is incorrect.

• Option 4: "The colour of the new car we want to buy has been chosen by us."

  This uses the verb structure "has been chosen" and includes the "by us" phrase. The structure "has been + past participle" is the correct passive form for the Present Perfect tense ("have chosen"). This option matches the correct passive voice transformation. Therefore, this option is correct.

Revision Table: Key Elements in Voice Change

Additional Information: Passive Voice Tenses

Here are some common active voice tenses and their corresponding passive voice forms:

• Simple Present: Active (choose/chooses) → Passive (is/am/are + chosen)
• Present Continuous: Active (is/am/are choosing) → Passive (is/am/are + being + chosen)
• Simple Past: Active (chose) → Passive (was/were + chosen)
• Past Continuous: Active (was/were choosing) → Passive (was/were + being + chosen)
• Present Perfect: Active (have/has chosen) → Passive (have/has + been + chosen)
• Past Perfect: Active (had chosen) → Passive (had + been + chosen)
• Simple Future: Active (will choose) → Passive (will + be + chosen)
• Future Perfect: Active (will have chosen) → Passive (will have + been + chosen)
• Modals: Active (can/must/should choose) → Passive (can/must/should + be + chosen)

Understanding the correct tense conversion is crucial for changing the voice of a sentence accurately.