Okay, so you know how sometimes we use words to talk about people or things doing something or having something? Like, "I have a toy" or "He gave me a present." Well, sometimes we use a special kind of way to say who or what is getting something or benefiting from something. This is called a dative construction.
When we use a dative construction, it usually involves using a word like "to" or "for" to show who or what something is happening to or for. For example, if I say, "I gave the toy to my friend," the word "to" is showing who is receiving the toy. Or if I say, "I made a cake for my mom," the word "for" is showing who the cake is for.
Sometimes we use different words in different languages to show this kind of relationship. In German, for example, they use different endings on some of their words to show who or what the action is happening to. So instead of saying, "I gave the toy to my friend," they might say, "Ich gab meinem Freund das Spielzeug," which has a different ending on "meinem Freund" to show that he's the one the action is happening to.
Overall, a dative construction is just a way to talk about who or what is getting something or benefiting from something by using special words like "to" or "for."