Ich gebe dem Mann das Buch.
English: I give the man the book.
The dative is a German case used to show the indirect object of a sentence, often answering the question 'to whom?' or 'for whom?'. It changes the articles and sometimes the endings of nouns.
Use the dative case in German to indicate the indirect object (the person or thing receiving something), after certain prepositions (like 'mit', 'zu', 'bei', 'nach', 'aus', 'von', 'seit'), and after some verbs that require the dative.
Ich gebe dem Mann das Buch.
English: I give the man the book.
Sie hilft der Frau.
English: She helps the woman.
Wir fahren mit dem Auto.
English: We go by car.
Das Kind spielt mit den Kindern.
English: The child plays with the children.