das mag ich = I like that
Ich mag sein Bild = I like his picture.
like (I like you = ich mag dich)
(Es ist) nur so ich mag Mädchen = (it's) just that I like girls
and I like you
Ich mag Geometrie. - I like Geometry. Ich liebe Geometrie. - I love Geometry.
Ich mag Bild is grammatically incorrect and translates as I like picture.The grammatically correct form would be Ich mag das Bild which translates as I like the picture.
I do not like.
Ich mag Apfel kuchen. -I like apple pie Ich mag Amerikaner -I am American
Magst Du...? Do you like...? From the verb mögen - to like
"mochte" (liked) is the past tense of "mag, moegen" (like) , as in "Ich mochte..." (I liked...)
Ich mag Dich.