on weekends和on the weekend的区别on weekends指所有周末，每逢周末，强调味道更浓。on the weekend在周末，就指某个周末。
on weekends的例句Jim gardened at the homes of friends on weekends（吉姆周末帮忙打理朋友家的花园）。on the weekend的例句His picture was plastered all over the newspapers on the weekend（他的照片占据了周末报纸的头版）。
