A dialogue supporting apparatus that easily selects a desired sample sentence from among candidate-sample sentences corresponding to inputted speech. The dialogue supporting apparatus includes a speech recognition unit performing continuous speech recognition of the inputted speech, a database unit having a sample sentence database holding the correspondence of sample sentences of a source language and a target language, a sample sentence selection unit selecting one or more sample sentences from within the sample sentence database, according to a speech recognition result or operation of a GUI unit, a sample sentence comparison unit (i) comparing the one or more sample sentences selected by the sample sentence selection unit and the speech recognition result, (ii) calculating word scores from an appearance location of the words, and (iii) deriving a display parameter for each word of each sample sentence, based on the word scores, and the GUI unit performing the display of a sample sentence based on the display parameter.