company sb. on/at sth.什么意思,谢谢.

company sb. on/at sth.什么意思,谢谢. spent sb. st. doing sth./on sth.翻译：①spent sb. st. doing sth.②spent sb. st. on sth. call sb at/on 电话号码 对吗? call at a call on sb. call sb on+电话号码还是call sb at+电话号码 “call sb on”与“call sb at”有区别吗? “call sb on”与“call sb at”有区别吗? 在五月一日,英语怎么说是on May 1st还是at May 1st? in,at,on加上时间on july 1st,2008.还是in july 1st,2008?in,on,at加上时间有什么区别? drop in on sb./ drop in at a place翻译 用 call on sb 造句 用 call at sp 造句 给某人打电话是call sb on还是at? on sb'home还是in还是at?为什么? be on at sb.和go-getting是什么意思 I study at St （ ）the moring ( )October 21st,A,on ,in B on,of C,in,at D,at,of 到底是call sb on+电话号码还是call sb at+电话号码 call on sb和call at sb有什么不同?以及关于call的相关短语,