1. A voice learning apparatus comprising: a learning-material voice storage unit that stores learning material voice data including example sentence voice data; a learning text storage unit that stores a learning material text corresponding to a content of the learning material voice data, the learning material text including at least one example sentence text associated with a corresponding portion of the example sentence voice data; a learning-material text display controller that displays the learning material text stored in the learning text storage unit; a learning-material voice output controller that performs voice output based on the learning material voice data corresponding to the learning material text displayed by the learning-material text display controller; an example sentence specifying unit that specifies one of the at least one example sentence text in the learning material text, as a specified example sentence, in response to a user operation while the learning-material voice output controller is performing the voice output; an example-sentence voice output controller that performs voice output based on the example sentence voice data associated with the specified example sentence in the learning material voice data, when the example sentence specifying unit specifies the specified example sentence; and a learning-material voice output restart unit that restarts the voice output based on the learning material voice data, in response to the user operation, from a position where the learning-material voice output controller stops the voice output last time, after the voice output is performed based on the example sentence voice data associated with the specified example sentence.