নিয়ম (Present Perfect Active → Passive):

1. Active sentence-এর object হয়ে যায় Passive sentence-এর subject।

2. have/has been ব্যবহার করা হয়।

3. মূল verb-এর past participle form লাগে।

4. শেষে by + Active subject-এর object form বসানো হয়।

Structure:

Object + has/have been + past participle + by + Subject

উদাহরণ:

• Active: We have already done the exercise.

• Passive: The exercise has already been done by us. 

অপশন বিশ্লেষণ:

• ক) Already the exercise have been done by us. 

  • Singular subject → has been ব্যবহার হবে।

  • Adverb already ঠিক স্থানে নেই।

• গ) The exercise had been already done by us. 

  • Had been → Past Perfect Passive, কিন্তু মূল বাক্য Present Perfect।

• ঘ) The exercise is already done by us. 

  • Simple Present Passive, মূল বাক্য Present Perfect নয়।

সঠিক উত্তর: খ) The exercise has already been done by us