Active to Passive Voice Made Easy: Perfect Tenses & Complex Sentences Solved | Free PDF for CSS, PMS, PPSC, FPSC & NTS

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Active to Passive Voice Made Easy: Perfect Tenses & Complex Sentences Solved

Free Online Practice with Answers for CSS, PMS, PPSC, FPSC & NTS Aspirants — Present/Past/Future Perfect, Interrogatives & Reported Clauses Explained Step by Step

Scholar Eye  •  English Grammar Series  •  6 min read

CSS PMS PPSC FPSC NTS

Voice change questions quietly decide marks in almost every competitive English paper — yet most aspirants only memorise the simple tense formulas and freeze the moment a Perfect Tense, a negative interrogative, or a complex sentence with a reported clause shows up. This guide breaks down exactly those patterns, with fully solved examples and the grammatical logic behind each transformation — taken straight from our complete solved exercise set.

📘Why Perfect Tense Passives Trip Up Most Candidates

Present, Past, and Future Perfect passives all share one habit: the auxiliary have/has/had/will have is followed by been before the past participle. Miss that single word and the whole sentence collapses. Below are the four structural rules that solve almost every perfect-tense passive question in past papers.

Present Perfect

has/have + been + V3
"He has launched a project" → "A project has been launched by him."

Past Perfect

had + been + V3
"They had done a great job" → "A great job had been done by them."

Future Perfect

will have + been + V3
"She will have read the book" → "The book will have been read by her."

Interrogative Perfect

Auxiliary shifts to the front: Has/Had/Will + subject + been + V3
"Had they returned the books?" → "Had the books been returned?"

💡 Examiner's angle: Uncountable and plural objects are the most common trap. "Attention," "advice," and "homework" always stay singular in the passive ("Has attention not been paid…"), never "have."

🧩Solved Examples: Perfect Tenses in Action

1

Active: They have successfully completed the mission.

Passive: The mission has been successfully completed by them.

Present Perfect — the object becomes a singular subject, and the adverb sits before the main verb, not after.

2

Active: My cousin had won many prizes before joining this institution.

Passive: Many prizes had been won by my cousin before joining this institution.

Past Perfect — only the main clause changes; the dependent time clause stays untouched.

3

Active: Has she not done her homework?

Passive: Has her homework not been done by her?

Negative interrogative — "not" slots in right after the new subject, before "been."

🔗Complex Sentences: When Two Clauses Need Converting

This is where most candidates lose easy marks — reported speech and conditional structures often contain a passive change hiding inside the subordinate clause, not just the main one. Both clauses must be converted correctly, or the sentence only looks half-transformed.

4

Active: The teacher asked the students if they had done their homework.

Passive: The students were asked by the teacher if their homework had been done by them.

Main clause: "asked" → "were asked." Subordinate clause: "had done" → "had been done." Both shift together.

5

Active: I expect that the management will give me some new assignments.

Passive: It is expected by me that I will be given some new assignments by the management.

A double-passive structure: the reporting clause becomes "It is expected," and the embedded clause converts separately into future passive.

❓Question Words & the "By Whom" Trap

Wh-questions keep their question word up front, but the subject-object swap still happens immediately after it. One exception every serious candidate should memorise:

6

Active: Who will look after the orphans?

Passive: By whom will the orphans be looked after?

"Who" becomes "By whom" only — every other Wh-word (What, When, How, Why) stays exactly as it is.

✅Quick Revision Checklist

• Perfect tenses always need been — check for it in every answer before moving on.
• Phrasal verbs stay together: "take up" → "be taken up," never split apart.
• Uncountable nouns (advice, homework, attention) take singular passive auxiliaries.
• In complex/reported sentences, convert both the main clause and the subordinate clause.
• Only "Who" changes to "By whom" — all other question words remain unchanged.

Get the Complete Solved PDF — Free

All 8 exercises, fully solved with grammatical explanations for every single sentence — ready for CSS, PMS, PPSC, FPSC & NTS preparation.

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