Merhaba! I have a question about when to use seni and when to use sana. For example,

sana inaniyorum - I believe you
seni seviyorum - I love you

Is there a rule as to which one to use with certain verbs? Does this also apply for beni and bana etc?

Thank you so much!

It's Seni seviyorum.

You can find when a verb uses -e/a or -ı, i in www.turkishdictionary.net

Thanks for your post but I was actually wondering why isnt it sana seviyorum or seni inaniyourum? I was just using these as examples to see if there was a special rule for which one to use with which verbs so I know when using seni or sana with other verbs. Im being a little bit confusing - sorry!

Yes, there is a rule.

"The case suffix for the object needs to be choosen according the verb"

This might not look very helpfull as you need to know what verb takes what case suffix. All verbs take certain case suffixes. So we say "-i sevmek", -"e inanmak" etc.

The dictionary that opens when you double click a word, turkishdictionary.net is part of this website. It is designed to help the learners. When you double click these verbs you will see what case to use.

sevmek << double click
inanmak << double click

It will say something like /ı/ /a/ where /ı/ means accusative (-ı,-i,-u,-ü) and /a/ means dative (-e,-a). We are aware that we need to improve the dictionary. We are working on it. Bye.

Thanks so much - and the dictionary is really great - Im sorry if I implied otherwise!

No, of course you didn't imply anything. I just wanted to say that we are sorry that the dictionary is not perfect yet because it is a bit unclear about the case suffixes and some entries are missing.

Btw, don't be shy if you want to criticize something like this. We can only welcome such critics. Thank you.