How do I speak I don't understand in Swedish?

First notebook entry: Introducing myself hello，everybody！ My name is Ziye, you also can call me Terry. I am 18 years old as a only child in my family. I come from china but study in sweden now. I like to play sports such as soccer,badminton and basketball to spend my weekends. And english is not the mother language of swedes, so I wanna learn more by italki.