8. The method according to claim 6 , wherein the generation of the translated language table is performed according to a corresponding sentence template dictionary including corresponding sentence template pairs of different languages.
6. An automatic speech translation method, comprising: extracting speech features used for speech recognition from an input speech signal in an input language; selecting, by a speech recognizer, an input sentence template that is most closely corresponding to the input speech signal in a set of sentence templates and a word class of the input sentence template from a set of word classes, the input sentence template being composed of the sentence elements having corresponding sentence elements in a second language; forming an input language table including the input sentence template, the word class, and tags showing whether each of the sentence elements of the input sentence template is identified in the extracted speech features; generating a translated language table corresponding to the input language table, wherein the translated language table includes a translated sentence template corresponding to the input sentence template and a translated word corresponding to a word in the word class, and the translated sentence template is composed of the corresponding sentence elements in the second language selecting prosody data corresponding to the translated sentence template; and synthesizing a speech signal based on the prosody data.