banana
The Italian word for 'banana' is 'banana'. It's used in the same context as in English, to indicate the yellow fruit.
Can you pass me that banana?
This sentence is framed as a polite request. 'Can you pass me' is 'Puoi passarmi', 'that banana' is 'quella banana'.
I ate a banana for breakfast.
This is a simple sentence explaining an action done in the past. The subject 'I' is translated as 'Ho', 'ate' as 'mangiato', 'a banana' as 'una banana' and 'for breakfast' as 'a colazione'.
The banana is my favorite fruit.
In this sentence, we are expressing a preference. 'The banana' is translated as 'La banana', 'is' translates as 'è', 'my favorite fruit' translates as 'il mio frutto preferito'.