1 what is the difference between ( seni , sana ) ? and when İ can use ( seni ) or (sana)

2 what the different between ( Ben de ) and ( Bende) without space

3 when İ can said ( sen de ) or ( seninde)

thanks so much

seni is accusative of sen => sen + i

sana is dative => sen + e = sana

if you need to use accusative, then you will say seni. if you need to use dative, then sana.

***

bende is locative of ben => ben+de (in me, within me, inside me etc)

ben de is "me too". de is "too" if it is not a suffix.

***

I think you ask this because you heard different responses for wishes like "bayramın kutlu olsun" > "senin de"

and "kendine iyi bak" > "sen de"

They are different because the wishes are different. First one talks about someone´s special day. other one talks about a person.

"Be your day happy!" so you would response: "yours too"

but if one says: "be (you) happy!" you would response: "you too"

So they are different responses. You would use which is proper.

That was so helpful but could you gıve us an example for each

seni "as accusative"  -  sana "as dative"  - bende "as locative"

I´ll be very grateful,

thanks

Examples;

Seni seviyorum : I love you

Seni görüyorum : I see you

Seni anlamıyorum : I don´t understand you

More about accusative.

Sana bakıyorum : I am looking at you (Like "to you" directional case)

Sana uygun değil : It doesn´t fit on you

Sana geliyor : She is coming to you.

More about dative.

Kalemin bende : Your pen is with me

Bende para yok : I don´t have money (there is no money with me)

Bende çok çorap var, sana verebilirim : I have many socks (There are many socks with me) I can give you.

More about locative.

Also there is a search form on the right top of this website. You can use it for more information about these terms and more.

sorry, removed post because caliptix has already answered comprehensively

Merhaba Henry, katkıların için teşekkürler. I prefer you don´t remove them if yours have more (different) information than the other post

Selamlar

We actually had several similar example sentences , but generally the information was the same. Next time I will not delete it, it was only because you gave more examples, and I thought your post was better.