"špatné odpoledne"

Translation: bad afternoon

[Ryan47435765]

Oscar the Grouch's greeting?

[outlander2016]

Does Czech people really use such construction in conversation? Or it is just a phrase?

[Petr486191]

Not often but I guess you could use it for example if you expect some unpleasant work in the afternoon.

[LorriAbleC]

I'm still kinda confused by the use of accents?

[ChovMart]

Accent is almost always on the first syllable of the word

[VladaFu]

I am quite sure LorriAbleC meant "diacritic marks" when she said "accents". Most foreigners call them accents even though only some diacritic marks can be called as such (čárka yes, háček no).

[daguipa]

If you mean the diacritic marks on some letters, like é or ž, all you have to do is to read the "tips and notes" section on the first skill, where they explain the letters and their sounds.