介词后加定冠词the可以么

童鞋你好.
介词通常在特指的时候后面加the,但也有一些固定词组,不加the.
如 at home/school,at noon/night,in surprise,on duty/business/fire/sale/holiday 等等.
另外只有名词前可以加the,所以,如果介词后面接的不是名词的话,就一定不加the.
如 near here （接副词）,look at me （接代词）,in 2011（接数词）,I am thinking about whether I'll go or not. （接从句）.