在定语从句中,都说when可以由at/in/on+which代替。如果先行词是the day,the time时,如:I will never forget the day on which i meet you.介词on是用于on the day 的搭配。这个没问题。但是,当先行词为today,yestoday,next month等时,它们本身不用和介词搭配用,而是直接说:Today i will go to school.等等。那么,在定语从句中,当它们为先行词,怎么用介词+which 代替?如:Next month,when you will spend your holidays in your town,is approaching.下个月即将来临,届时你们将在家乡度暑假。