call in - 把。。。叫来 (有命令的成分)call for - 叫。。。来 (有需要的口气)比如;call in -jennie, can you call the secretary in please?jennie, 你能不能把秘书叫来?call for -call for a taxi if you need it.需要的话你可以叫个的士来。
call in on 是个固定词组为“拜访;看,宾语一般是”,不是“话其中in是副词,on是介词。例如when she went to the shops, she used to call in on her mother to see if she wanted anything.她在去商店买东西的时候常常去她母亲那,看母亲是否要买些东西。could you call in on mum on...