1. When I came to her house, she was making her son learn.
-> When I came to her house, her son was being made to learn.
2. I will make him help me.
-> He will be made to help me.
3. I have just made my students write an essay.
-> My students have just been made to write an essay.
4. They make me clean the floor every day.
-> I am made to clean the floor every day.