1介词是用在名词之前；如；in the room.at seven.to school.across the the river.副词是用在动词之前后.如Play well.sing wonderfully
介词,副词怎么用?具体点.什么on a to in啊等等 区别是什么?怎么用?
1介词是用在名词之前；如；in the room.at seven.to school.across the the river.副词是用在动词之前后.如Play well.sing wonderfully