But "o" could also be interpreted as belonging to the adverb of place, right? "She likes working in that garden." Thus, you could also say "O, o bahçede çalışmayı seviyor." Is this correct?
SoroushiForoushi explained it below :) So technically, "He loves working on that garden" would be correct, you need to change the subject and the proposition.
It is wrong to use ''I love'' because the verb is 'seviyor' not 'seviyorum'
What would be the correct way to say: He loves working on that garden
Because working in the garden could also mean he's working on something non-garden related in the garden. I want to refer to him specifically working to make the garden look better or something.
so, does that mean if we want to use the accusative of the verb it is written in that form?
Yes :) You take the gerund form "-mA" and add the case endings accordingly
Nope, "ders çalışmak" or "okumak" is to study. "çalışmak" just means to work.
No actually it means either. You can ABSOLUTELY use çalışmak for study without even using "ders"
So the number of verbs needing an accusative verb are limited? You use it with gerekmek and sevmek and some other verbs, but most verbs need the regular infinitive?