Dei, dello, al, ai, allo, nello, nei, and other variations of the prepositions are simply modified with their correct combination of the.
Ex 1:
>The man is in the lo zoo.
>L'uomo è nello zoo.
The ne(in or on) is combined with lo(the) to make the word nello to pair with zoo.
Ex 2:
>They are women of beauty.
>Loro sono donne delle belle.
The words ai, alle, alla, etc. mean to the when conjugated.
Ex 3:
>I write to my girlfriend.
>Io scrivo alla mia ragazza.
