go to the threatre

go to the theatre是表示到剧院办事（不一定看戏剧）
go to theatre表示看戏剧
类似短语go to schoolgo to the school
go to hospitalgo和 to the hospital
at table吃饭at the table在桌子旁

可以使用"movie theatre "来表示“电影院”
go to the movie theatre

对啊。
准确的说go to the theatre本来是去剧院的意思，但是也可以用来表示去看戏。就象go to the cinema.

反了.
go to theatre为去看戏.
go to the theatre为去剧院.
相近的还有go to school上学 go to the school去学校,go to church做礼拜,go to the church去教堂.