Last Tuesday he received a letter from the local police. In the letter he was asked to call at the station. [《新概念英语》(新版)第二册, 第34课, 外研社, p.158]
该书在课文注释中说：“call at 拜访，也可用 call on。”（同页）
上句中的 call at 可以换用 call on 吗?
上句中的 call at 绝不可以换用 call on。
从语法特点上看, call at 的宾语是表处所的词, 而 call on 的宾语则是表人的词。从语义上看, call at 是指有目的的去某地, 通常时间很短, 而 call on 则是指因社交或因公正式访问某人。请对比下列例句:
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I called at the office as I was passing, but you were out. 我路过时去了你的办公室，但你不在。
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He calls at every house in the street once a month. 他每月一次到本街来拜访每一户人家。
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He called at the hospital after work to find out whether Mr King was better. 他下班后去医院，了解金先生伤情是否好一些。
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One day, an Englishman and an English woman, Lucie Manette, called at the wine shop. 有一天，一位英国男士和一位名叫露西·曼奈特的英国女士来到这家酒店。
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Mr Ball has just called on Mrs Zhu to give her a message. 鲍尔先生刚刚来拜访朱夫人，带给她一个口信。
请做下面的英语试题：
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—Have you called ____ Mr Brown? —Yes, I've called ____ his office. A. at; on B. in; with C. on; at D. on; with
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Shall we call ____ Mr. Green's house? A. at B. on C. for D. up
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I'll ____ you at your office sometime next week. A. call for B. call on C. call out D. call up(北京会考,94-36)