1. A translation system for translating inputted sentences from a first language to a second language comprising: dictionary memory means for storing a plurality of reference data corresponding to particular words in said first language, said reference data including the part of speech and equivalent word in said second language; memory means for storing inputted sentences in said first language; input means in communication with said memory means for inputting a sentence in said first language; designation means connected to said dictionary means and responsive to said input means for designating a postpositional word in said second language and for storing said postpositional word as part of said reference data in said dictionary memory means; and translation means using said reference data stored in said dictionary means for translating an inputted sentence from said first language to said second language.