make a difference是什么意思

It means to make an important effect on something,especially a good effect。意思是对某事产生巨大的影响或者作用,尤其是好的方面。可以用这个短语：make a big/ a great deal of / a lot of difference 例句:The fact that I can now organize my own time makes a big difference。现在我能自己安排时间了,这对我有很大的作用。