Breakdown of La supplente detta tre domande, e noi le scriviamo sul quaderno.
Questions & Answers about La supplente detta tre domande, e noi le scriviamo sul quaderno.
Because dettare and dire are not the same thing.
- dire = to say, to tell
- dettare = to dictate
So La supplente detta tre domande means that the teacher is dictating three questions for the students to write down, not just saying them in a general way.
Here, detta is the third-person singular present of dettare:
- io detto
- tu detti
- lui/lei detta