A noun always comes after the word 'during'. The word during is a preposition, not a conjunction. You cannot say ' During she.... / During I... ' because the preposition is always followed by a noun, not a clause with a subject and a verb. He made a joke during dinner.

The words during and for are both used to discuss time, but they serve different functions in a sentence. During is a preposition used to indicate when something happens within a specific time frame or event.

during is a preposition which is used before a noun (during + noun) to say when something happens. It does not tell us how long it happened. For example: "Nobody spoke during the presentation." "We get plenty of snow here during the winter."