passivize
passivise BrE

However, those languages with severe restrictions on which roles can be relativized are precisely those that can passivize almost any position, and hence the last two sentences would be normal in these languages.

Even events which we would never passivize in English because they involve only one participant and therefore cannot 'logically' be passivized are expressed in passive structures in these languages if they are unpleasant, for example'I was died on by my father'in Japanese.