The teacher is going to announce the results tomorrow. (make it passive)

• be going to দিয়ে Active Voice থাকলে তা Passive Voice এ রূপান্তরের নিয়ম:
- Active voice এর Object টি Passive voice এর Subject হিসেবে বসে।
- Tense অনুযায়ী Auxiliary Verb বসে।
- going to এর কোন পরিবর্তন হয় না।
- going to এরপর be বসে।
- মূল verb এর Past participle form বসে।
- by বসে।
- Active voice এর subject টি Passive voice এ Object হিসেবে বসে।

• Active Voice: The teacher is going to announce the results tomorrow.
• Passive Voice: The results are going to be announced by the teacher tomorrow.

Source: Advanced Learner's Communicative English Grammar & Composition By Chowdhury & Hossain.