call on与call at 的区别

call on与call at 的区别 “call sb on”与“call sb at”有区别吗? “call sb on”与“call sb at”有区别吗? call at,call on drop in 的用法区别 用call on 与 call at call on,call in,call off的区别 英语call的用法当call作光顾,拜访的意思时,call at,call in,call on有什么区别?（最好详细一点, 请问call on和call at有什么区别? call on和call at有什么区别? 1、call与break的词组意思call on/call at/call for/call off/call up/call inbreak down/break in/break into/break off/break up/break away from2、when&while用法区别3、keep up with的意思 请问call at ,callfor.,call on,call up有什么区别? call on the phone和make a call的区别 call at a call on sb. call at call in call off call out的用法 call on sb和call at sb有什么不同?以及关于call的相关短语, call at造句子1.call at2.call on 请问call in,call at,call on都有来访的意思,这三个词有什么区别吗?有例子说明一下更好了. call at,call out,call on,call up,call off,最好能举例说明一下,.