Questions & Answers about Haben Sie süße Trauben?
Why does the adjective süß take the ending -e to become süße?
Because Trauben is a plural noun with no article (like die or keine) in front of it. When a plural noun has no article in the accusative case, the adjective directly in front of it takes the ending -e.
Why is the phrase süße Trauben in the accusative case?
The verb haben (to have) requires a direct object. The thing being had, which is the grapes here, must always be in the accusative case.
How would I ask this same question to a friend instead of using the formal Sie?
You would use the informal du and conjugate the verb to match: Hast du süße Trauben?
What is the singular word for a single grape?
A single grape is die Traube. Because it ends in an -e, you just add an -n to make the plural form die Trauben.