joy的形容词和副词

joyful adj. 欢喜的；令人高兴的；

joyfully adv. 高兴地，喜悦地；

例句

Being able to learn new knowledge is my most joyful thing.

能够学到新的知识是我最大的快乐。

They greeted him joyfully.

他们非常快乐地跟他打了招呼。

The meeting with the old comrades-in-arms is a joyful one.

与老战友的那次聚会是一次欢乐的聚会。

Life should not only be competitive but also be joyful.

生活不应只是竞争，生活也应是喜悦的。

The meeting between the two families was a joyful one.

两家的那次相聚是一次愉快的聚会。

They began to work harder than ever and more joyfully.

他们开始比以前更努力地、更快乐地工作。