2、某种可能性。e.g.Han Mei can’t be in the classroom.韩梅不可能在教室里。Can he come here today, please?请问他今天能到这里来吗?A:Canyou…?你会……吗?B:Yes,Ican./No,Ican’t.C:Canhe/she…?她会……吗?A:Yes,he/shecan./No,he/shecan’t.Canyouplaybasketball?Yes,Ican.Canyouplayfootball?Yes,Ican.Canyou/