Passive voice of 'He had kept up his diet program for a month'.

সঠিক উত্তর: ক) His diet program had been kept up for a month.

Active voice থেকে passive voice করার নিয়ম:

- Active voice-এর object-টি passive voice-এর subject হয়।
- Tense অনুযায়ী auxiliary verb বসে।
- তারপর মূল verb-এর past participle form বসে।
- প্রয়োজন অনুসারে preposition বসে।
- Active voice-এর subject-টি passive voice-এর object হয়।

• Past perfect tense-এর passive voice করার নিয়ম:

Active voice-এর object passive voice-এর subject হয় + had been + মূল verb-এর past participle + by + Active voice-এর subject-টি passive voice-এর object হয়।

• Active voice-এর object - his diet program,
- Auxiliary verb - had been,
- keep-এর past participle - kept,
- keep up একটি phrasal verb, তাই passive voice-এও up থাকবে।

• Active voice: He had kept up his diet program for a month.
• Passive voice: His diet program had been kept up for a month.