1. He wants everyboddy to serve him.

=> He wants he is served by everybody.

2. I don't want anyone to disturb me.

=> I don't want I am disturbed by anyone.

3. She would like someone to post this letter.

=> She would like this letter is posted by someone.

4. Someone has to look after the garden.

=> The garden is had to looked after by someone.

5. They had to cut down that tree.

=> That tree had to be cut down.
6. He doesn't people to make him a fool.
-> He doesn't want to be made a fool