Maybe

• I do like cats
• Do I like cats?

but taken to the extreme?

• Hij schreef een bericht. (He wrote a message)

• Schreef hij een bericht? (Did he wrote a message?)

Can you give me an example - Question

You can give me an example - Affirmation

I know you already got it but a few others came to my mind:

Finnish, which not a tonal language:

• Sinä pidät kahvista. (“You like coffee.”)
• Pidätkö kahvista? ("You like coffee?")

Japanese:

• Anata wa kōhī ga sukidesu. ("You like coffee.")
• Kōhī wa sukidesu ka? ("You like coffee?")

I think you'll find the pattern of question words/suffixes in nearly every language that is not explicitly tonal.