to call on

• 拜访； 号召； 呼吁； 请求

to call on的用法和样例：

例句

1. A certain person called on you yesterday.
   昨天有个人来拜访过你。
2. I paid a visit to my former English teacher.
   我拜访了我以前的英语老师。
3. He called on the workers to fight for their rights.
   他号召工人为争取自己的权利而斗争。
4. The general's speech was pitched as a call to arms.
   将军的讲话是一个要大家拿起武器的号召。
5. Police have appealed for witnesses to come forward.
   警方呼吁目击者挺身而出。
6. He turned a deaf ear to all requests for help.
   他不理会一切求援的呼吁。
7. Henry got a stomachache and asked to be excused.
   亨利肚子疼请求离开一下。
8. He appealed to his friends for support.
   他请求朋友支持。