...,而是表示“上学”(指学校的功能和作用),其前不用冠词。类似的有
after school(放学后),since school(自从上学以来),in/at
school(在上学)。如:Come and see me before school. 上课前来找我。We’re going to play football after
school. ...
... generation(世世代代)是习语,其中的generation前通常不用冠词或其他限定词。如:His is a family trade, passed down
from generation to generation. 他的生意是家族似的,是一代一代传下来的。These stories were passed down from generation to generation. 这...