不及物动词
1. The policeman whistled for the motorcar to stop. 警察吹警笛令汽车停下。
2. whistle
2. He whistled to his dog. 他对他的狗吹口哨。
3. whistle
3. He whistled the song. 他用口哨吹了这首歌。
名词
1. The referee blew his whistle, and the game stopped. 裁判鸣笛,比赛停止。