weekend指一個周末，指星期六和星期天；而weekends指每個周末，并不是指一個周末而是多個或指每逢周末，這時就在weekend后加s。

weekend的用法

1、She had agreed to have dinner with him in town the following weekend.

她答應下一個周末和他在城里共進晚餐。

2、He told me to give you a call over the weekend.

他讓我周末給你打個電話。

3、I went home at the weekend

我周末回家了。

4、Are you doing anything over the weekend?

你在周末有什么安排嗎？

5、I also bought some casual clothes for the weekend.

我還買了些周末穿的休閑裝。

weekends的用法

1、Esther used to visit him for the occasional days and weekends.

埃絲特過去會偶爾在周末或別的日子來探望他。

2、Jim gardened at the homes of friends on weekends.

吉姆周末幫忙打理朋友家的花園。

3、Bill would visit on weekends.

周末比爾會來。

4、They knock around on weekends in grubby sweaters and pants.

他們周末穿著邋遢的毛衫和褲子到處閑逛。

5、The farm is open to the public only during two open-house weekends.

該農(nóng)場僅在兩個周末接待日才對公眾開放。