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I was at church on Sunday
I was at the office onMonday
为什么有的要加the 有的不要?
参考答案:带the的表示特指,不带the的都有固定意思
如
He is in hospital. 他生病住院了.
He is in the hospital.他在那家医院.[未必是生病]
He goes to school everyday. 他每天都上学[是去读书].
He goes to the school everyday.他每天都去那所学校[未必是读书].
I was at church on Sunday.周末我在做礼拜.
I was at the church on Sunday.周末我在教堂[未必是做礼拜].
at church 做礼拜
I was at the office on Monday.周一我在那个办公室里.
而at office 表示"在办公"
希望这些例子能让楼主明白和区分它们的不同