call sb up和call up sb区别

当sb是不定代词的时候,只能是callsb up, 例如,call her up,call him up...
当sb是人名或指定的某人时候,比如 call Tom up, call up Tom, call mom up, call up mom...两种表达都是对的,只有sb是不定代词时候,只能为call sb up.call up sb是召集人，call sb up是打电话给某人。这说法对吗？ 都是一个意思？call up 有“打电话给” 和“征召⋯⋯入伍” 的两种意思。但是用法遵循语法中对不定代词的限制。when I'm in Berlin, I willcall him up/ I will call Hans up/ I will call up Hans. He called up the museum. 他给博物馆打了电话。TheUnited States has called up some 100,000 military reservists. 此举中call up 为招募。：）