When do we use to + infinitive?
giving a command - I order you to sit still.
expressing desire - I would like you to have an apple.
questions including 'do' - Do you want to build a snowman?
negative sentence including 'do' - I don't want to hear your story.
giving a reason - I study english to become an english teacher.
practice - assignment 27
reference - verb patterns (page 11)