Change into passive voice: "Ali writes a letter."
Correct answer: A. A letter is written by Ali.
Simple present active becomes is/am/are + past participle: "A letter is written by Ali."
Solved English MCQs on changing sentences from active to passive voice in every tense, questions and commands, with the rule explained for each.
Voice change is a regular question type in English papers for PPSC, FPSC and NTS. These MCQs take one sentence through each tense, as well as questions, commands and sentences with modal verbs, and show the correct passive form.
The key is to know which helping verb each tense needs in the passive (is, was, has been, is being and so on) and to keep the tense unchanged. Read each explanation to see the pattern, then try to form the answer before you look at the options.
Correct answer: A. A letter is written by Ali.
Simple present active becomes is/am/are + past participle: "A letter is written by Ali."
Correct answer: A. A letter is being written by Ali.
Present continuous becomes is/am/are + being + past participle.
Correct answer: D. A letter was written by Ali.
Simple past becomes was/were + past participle.
Correct answer: A. A letter has been written by Ali.
Present perfect becomes has/have + been + past participle.
Correct answer: D. A letter will be written by Ali.
Simple future becomes will/shall + be + past participle.
Correct answer: D. A letter was being written by Ali.
Past continuous becomes was/were + being + past participle.
Correct answer: B. A letter had been written by Ali.
Past perfect becomes had + been + past participle.
Correct answer: B. Let the door be opened.
Commands (imperative sentences) use "Let + object + be + past participle".
Correct answer: C. Let the wire not be touched.
Negative commands become "Let + object + not + be + past participle".
Correct answer: B. By whom was this book written?
Questions with "who" become "By whom + was/were + subject + past participle?"
Correct answer: D. Is cricket played by him?
"Does" questions in the simple present become "Is/Are + object + past participle + by …?"
Correct answer: D. A new school is being built by them.
Present continuous: "is being built". The subject pronoun "they" becomes the object "them".
Correct answer: C. The student was punished by the teacher.
Simple past passive: "was punished". Note the roles stay the same: the student received the punishment.
Correct answer: C. My bag was stolen.
When the doer is unknown (somebody, someone, people), it is usually left out of the passive sentence.
Correct answer: B. This problem can be solved by her.
With modal verbs (can, must, should), the passive is modal + be + past participle.
Correct answer: C. The rules must be obeyed by you.
Modal passive: must + be + past participle.
Correct answer: A. Subject
In "Ali wrote a letter", the object "a letter" becomes the subject of "A letter was written by Ali."
Correct answer: B. A sentence with an intransitive verb, such as "He sleeps."
Intransitive verbs have no object, so there is nothing to become the subject of a passive sentence.
Correct answer: A. The project will have been completed by them.
Future perfect becomes will/shall + have been + past participle.
Correct answer: C. Pakistan won the match.
"Was won" is simple past passive, so the active form uses the simple past: "Pakistan won the match."