Active Passive Voice Conversion Explained

The question asks us to change a sentence from the active voice to the passive voice. Understanding the difference between these two voices is key to solving this problem.

• Active Voice: The subject of the sentence performs the action. The structure is typically Subject + Verb + Object.
• Passive Voice: The subject of the sentence receives the action. The structure is typically Object + 'to be' verb + Past Participle + (by Subject). The focus shifts to the action or the receiver of the action.

Sentence Transformation Analysis

Active Sentence Details

The sentence provided in active voice is:

"The company has recruited four hundred engineers who will have to complete an internship for three weeks."

Sentence Structure Insights

This sentence consists of two main parts connected by a relative pronoun:

• Main Clause: "The company has recruited four hundred engineers"
• Relative Clause: "who will have to complete an internship for three weeks" (This clause modifies "four hundred engineers")

Passive Voice Conversion Guide

Let's convert the main clause "The company has recruited four hundred engineers."

• Subject (doer): The company
• Verb: has recruited (Present Perfect tense)
• Object (receiver): four hundred engineers

To make it passive:

• The object becomes the new subject: Four hundred engineers
• The verb changes to the passive form of the Present Perfect tense: have been recruited
• The original subject becomes the object of the preposition 'by': by the company

So, the passive main clause is: "Four hundred engineers have been recruited by the company."

Relative Clause Conversion

The relative clause "who will have to complete an internship for three weeks" describes the engineers. When converting the entire sentence to passive, this obligation must still be associated with the engineers (who are now the subject of the main passive clause).

The phrase "will have to complete" indicates a future obligation. This needs to be retained and applied correctly in the passive construction.

Options Evaluation Guide

Now let's look at each option to see how it handles the conversion:

Option 1 Analysis Correct

Explanation:

• The first part, "Four hundred engineers have been recruited by the company," is a correct passive conversion of the main clause.
• The second part, "and an internship of three weeks will have to be completed by them," correctly expresses the obligation mentioned in the relative clause. It shifts the focus slightly to the internship itself but clearly states that "them" (the engineers) must complete it. This is a valid and common way to restructure such sentences in the passive voice.

Option 2 Analysis

Explanation:

• The first part is a correct passive conversion.
• The second part, "and they will have to complete an internship of three weeks," is also a grammatically correct way to express the engineers' obligation. It uses the pronoun "they" directly referring to the engineers. While valid, Option 1's structure might be considered a slightly more complete transformation of the original relative clause structure into a parallel passive construction regarding the internship.

Option 3 Analysis Incorrect

Explanation:

• Error 1: "The company has been recruited by four hundred engineers" is incorrect. The subject and object are reversed; the company cannot recruit engineers in this context.
• Error 2: "three week" should be "three weeks" (plural).

Option 4 Analysis Incorrect

Explanation:

• The first sentence "Four hundred engineers have been recruited by the company" is correct.
• Error: The phrase "will have had to be completed" is grammatically incorrect and awkward for expressing a future obligation in the passive voice. The correct structure is "will have to be completed".
• Error: "Intern-ship" is misspelled.

Final Answer Choice Selection

Based on the analysis, Option 1 provides the most accurate and grammatically sound conversion of the original active voice sentence into the passive voice, correctly maintaining the meaning and tense.

The correct option is: