It seems/looks/sounds as if/though… 看起来(听起来)好像……(有虚拟语气形式)
It so happened that… 偶然地、碰巧
It turned out that… 好像……(接主语从句)
join in 参加(大型活动)
join sb. in 参加……(接名词，表示活动)
judge by/from 以……来判断……
Judging by/from…, 从……判断，……
jump with joy 高兴地跳起来
keep (sb./sth.) away from 阻止、远离
keep a certain distance away 保持一定距离
keep a strict eye on sb./sth. 密切地关注……
keep as a young man 年轻时候
keep back ①阻止、阻挡、使……后退 ②扣留、保留
keep fit 保持身体健康
keep good hours 保持良好的生活节奏
keep in touch with 与……保持联系
keep off 使……离开
