1.did everyone have a good weekend?2.do you think everyone enjoys their weekends?为什么一个 有s一个

1.did everyone have a good weekend?
每位都度过了（自己的）愉快的周末吗?
表示单个人的weekend,用单数
2.do you think everyone enjoys their weekends?
你认为每个人（所有人）都很享受他们各自的周末时光吗?
everyone其实在这里泛指所有人,而且weekends前面有their,他们的,后面应该加复数形式.