Locate the complete infinitive phrase and identify its use.

The children were asked to play quietly.

Infinitive Phrase:

Use:

Infinitive Phrase: to play

Use: Direct object of the verb

"To play" becomes the direct object of the verb "asked", because the unknown subject was asking them to what? To play.

The subject in this passive sentence becomes the children, and the action of 'being asked' is placed upon them, but the infinitive is still the direct object.