Interested in Language
What is the actual meaning of "I will teach him to deceive others"?
Whether it means:
(i) I will teach him a lesson for deceiving others, or
(ii) I will teach him how to deceive others.
It could mean either, depending on the intonation and emotion. If an evil genius is speaking, and is simply announcing an intention, it means (ii). If a normal person says, it, with anger, it means (i).