"I think about her."

Translation: Myslím na ni.

[andrew_lim]

"Na ni myslím" is marked wrong, but "Já na ni myslím" is OK. Is there a rule to follow under which, for certain word orders, you do have to specify the pronoun?

[ArsinoeLC]

Same question ^^

[OlivaSadler]

For feminine akuzativ pronouns, you should use "ni" if there is a preposition (na, pro, před, etc.) and "ji" if it is without a pronoun.

[butterfly604479]

I also tried "Na ni myslím", marked wrong, and the corrected answer was "Já na ni myslím" - so again I'm just getting confused about when the personal pronoun is necessary... I thought unless you wanted it for emphasis, it wasn't required - but it's evidently a word order "feeling" again, as far as I can tell, rather than a rule? Any help welcome.

[VladaFu]

This is more about "ni" than about "já". It behves as a clitic here. But perhaps you could stress it and then...

[btopps]

What would the sentence be in that case?

[endless_sleeper]

Most likely "Já na ni myslím." or possibly "Myslím na ni já." depending on context. In both examples, "já" should be stressed.

[emre13397]

myslim na ji? ok too?

[VladaFu]

The n- forms are used with prepositions. Hence "na ni".