1. As a question word:
* "When" in Italian is "quando."
* The plural form of "quando" is "quando" itself. It doesn't change in the plural.
2. As a relative pronoun:
* "When" in Italian can also be translated as "quando" in this case.
* The plural form of "quando" in this context is "quando".
3. As an adverb:
* "When" as an adverb is usually translated as "allora" or "quando."
* Both "allora" and "quando" are singular forms and don't have a plural.
Example:
* Question: When will you come? (Quando verrai?)
* Relative pronoun: The time when he arrived. (Il momento quando è arrivato.)
* Adverb: When I saw her, I was surprised. (Allora/Quando l'ho vista, sono rimasto sorpreso.)
It's important to consider the specific context and grammatical function of "when" in your sentence to determine the correct translation and its potential plural form.