He's helped to decorate a Christmas tree and seen a Christmas play.

他帮着装饰圣诞树，还去看了圣诞剧。

youdao

He 's helped to decorate a Christmas tree and seen a Christmas play.

他帮助装饰圣诞树和看圣诞剧。

youdao

All the people always decorate a Christmas tree and sing and dance at home on Christmas day.

所有的人都装饰圣诞树，圣诞节在家里唱歌跳舞。

youdao

According to legend, Protestant reformer Martin Luther was the first person to decorate a Christmas tree.

FORBES: Everything You Wanted to Know About Christmas (but were afraid to Google)