【重点词语/短语用法解析】1.have a great time 意为“玩得愉快”，=enjoy oneself, have fun, have a good / wonderful / nice timehave a great / good time in (doing) sth. 做某事很开心2. ask sb.（not）to do sth. 要求某人（不）做某事The teachers ask us to do (do) lots of homework.3. order sth. from +地点“从某地订购食物”I want to order some books from the book store.4. keepto oneself 保守秘密5. unless conj. 除非；如果不 unless 引导的条件句表示在特定条件下，才决定做或不做一件事。=if.notThe concert will be held as schedule unless there is a typhoon.= The concert will be
