11.1

11.1 Ja - jo (yes)

For a positive answer to a question like the following, we use ja:

Liker du teater?
Do you like theatre? 
Ja, jeg liker teater.
Yes, I do like theatre.

If the question contains a negation, we use jo instead of ja:

Liker du ikke teater? 
Don't you like theatre?
Jo, jeg liker teater.
Yes, I do like theatre.
Rydder ikke skomakeren? 
Doesn't the shoemaker tidy
Jo, han rydder.
Yes, he does tidy.