你在聚会上肯定玩得很开心。
fun /f?n/ n. 快乐；娱乐
◆ have fun 玩得开心，玩得高兴
■ must have done sth 表示对过去事实的较为肯定的推测，常译为“肯定……”，其否定形式是 can't have done sth。例如：He can't have left school so early.（他不会这么早离开学校的。）
16　宿舍
dorm /d??m/
单数部落　一间宿舍 a dorm/dormitory
复数部落　两间宿舍 two dorms/dormitories
■ 注：dorm 是美式英语的说法，为非正式用语；dormitory/?d??m?tri; ?d??rm?t??ri/ 为英式英语的说法。
会话急救包
住宿舍 live in a dorm
A：Have you ever lived in a dorm?
你曾经住过宿舍吗？
B：Yes. I started to live in a dorm since I was 12 years old. I love dormitory life.