1. pass sb. off as... 把某人改变或冒充成……
pass sth. to sb. 将某物递给某人 pass away 去世 pass down/on... 把……传给后世
pass...on to 把……传递给…… pass by 走过；经过 pass through 通过；穿过
1). He escaped by passing himself off as a guard. 他冒充警卫逃走了。
2). She passed him off as her husband. 她把他假充作自己的丈夫。
【即境活用】 根据句子的要求在括号里填入适当的介词或副词。
