Relative pronouns
I have a car. It is red. I also have a bike. It is blue.
The above sentences are all correct English, but if you read it out loud, it sounds very clunky. We can use what we call relative pronouns to make it feel more fluent.
I have a car that is red and a bike that is blue.
This looks and sounds a lot better! Of course, we can do the exact same thing in Swedish.
Swedish English
vars whose
där where
som who, that, which
vad what
vilket which
The most important thing to notice here is that you can not use vem orvar as relative pronouns in Swedish. vem and var are just question words. Here are some examples to make things a bit easier.
Vars
Min vän vars far är död. (My friend whose father is dead.)
Där
I landet där vi bor finns det mycket snö. (In the land where we live there's a lot of snow.)
Som
Bilen som de har är ny. (The car that they have is new.)
Vad
Vet du vad jag tänker på? (Do you know what I'm thinking of?)
Vilket
Han fick ett A i matematik, vilket är bra. (He got an A in mathematics, which is good.)