this day,in this day和on this day的区别

this day：时间副词,常在句末做时间状语.如：We had a good time this day.in this day：介词短语,常在句首或句末做时间状语,强调以一天为限,具体做了什么.如：In this day,we visited 3 pavilions.（场馆）on this ...