发挥积极作用英文

perform

play a part/ role (in ...)

起积极的作用 to play an active role; [例句]大家都知道，中国对外开放将对其经济发展起积极的作用。It is know to all that china's opening to the outside world will have a positive influence on its economic development.

make a difference（这里difference作“作用”讲）

take an active part in

Devolop the active effect of advertisement to the youth,and make advertisement as a stimulative fact in the growth process of the youth.