小组活动用英语可以称为"group activities"。这个词来源于英文 group，意为"小组"，和 activities，意为"活动"。下面是一些例句和它们的中文翻译：

We have a lot of group activities planned for the school trip. 我们为学校旅行计划了很多小组活动。

I enjoy participating in group activities because they help me to make new friends. 我喜欢参加小组活动，因为它们能帮助我交新朋友。

The group activities were a great way for us to bond as a team. 小组活动是我们团队凝聚的好方式。