點樣去分?

I often go to the cinema.
意即我有時去那間戲院
I usually go to church on sunday.
意即星期日我有時去教堂

其實兩句都可以用'the'或者唔用,
the 含有專指某人,某事,某物等等...的意思
如果句子的意思是要指明那間戲院或某間教堂的時候,就要用the
如果你只係想話有時會去戲院,唔係專指某一間就唔洗用the

指定的事, 物, 人要用 definite article THE.

` Upper floor ` is right.

Sometimes we might as well say ` I often go to the movies. `
But that doesn`t mean I go to a particular movie. It juz means that I often go to watch movies at the cinema.

It`s juz for ur reference. Don`t pick my answer.

I'm not very sure of the grammatical explanation, but I think you don't need 'the' in the second case because it's more general

a few other common usages that do not require 'the'
I go to school every day. (not to the school)
I go to class every day.

sorry it probably isn't of much help