Here are some examples of how these phrases may be used in Italian:

Non ha mai letto niente. (She read nothing.)

Non ho visto nessuna carta stradale. (I didn’t see any street signs.)

Non abbiamo trovato né le chiavi né il portafoglio. (We found neither the keys nor the wallet.)

Note that in the case of the negative expressions non...nessuno, non...niente, non...né...né, and non...che, they always follow the past participle. Observe the following examples:

Non ho trovato nessuno. (I haven’t found anyone.)