同学你好，该知识点来自沪江网校《流利口语金卡【随到随学】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学好，
there has ... to be 是there  be 句型，这里has是构成完成时态的。

involve sb in doing sth 是字典上的的用法，
https://dictionary.cambridge.org/dictionary/english-chinese-simplified/involve?q=involve+
to include someone in something, or to make them take part in or feel part of it
使参与，牵涉
I prefer teaching methods that actively involve students in learning. 我更喜欢能让学生主动参与学习的教学法。
She's been involved with animal rights for many years. 她多年来一直参与保护动物权益的活动。

祝好。