Thoughts about living in a host family

Its strange finding out about people's host families and how they're different from mine. Some clicked immediately, but that was usually because there was a person their age for them to hang out with. I don't quite know my place. Today my mom's uncle was sick and my dad, mom, and brother went to go visit him. I feel like, as part of the family I should go to, but then I've never met this person, so I didn't. What is my relationship. They keep telling me I don't have to do things around the house, but I'm part of the family, so I should. Today I did the dishes. It made me feel less of a guest. I feel like part of the problem is culture, I just don't know what's important to them, the other problem is language. I'm silent most of the time because its so hard to talk. And when they talk to each other i don't understand. Moreover, I'm twenty one years old. I feel slightly awkward living in my own parents home and figuring out how much I'm supposed to hang out with them... here its even harder. Should I go in my room and read a book, or should I try to watch a movie in Arabic that I don't understand just to be sociable. I suppose I should start trying to initiate conversations more, the only problem is it takes so long to express even simple ideas that its hard. I feel like I am picking up more of the language though, so I'm hoping for a moment where everything clicks. Maybe it won't, but I know it will get better.