17. A speech interactive method implemented in a computer system having at least a processing device, a storage device, a text input device, a speech input device and an output device, comprising: preparing an interactive information recording table in said storage device for recording speech interactive text sentence information; receiving a speech signal from a user using said speech input device and determining target text sentence information for said speech signal, or receiving given target text sentence information as well using said text input device, in order to provide said user with different interactive modes for a speech interactive operation; performing a speech assessment on said target text sentence information and generating an assessment result of a target text sentence; updating said interactive information recording table according to said generated speech assessment result and a timing count if said target text sentence information is given and received from said text input device as well; deciding an output response of said target text sentence information according to the interactive mode, speech assessment result, and said interactive information recording table; and outputting response information using said output device according to said decided output response and said interactive information recording table.
17. A speech interactive method implemented in a computer system having at least a processing device, a storage device, a text input device, a speech input device and an output device, comprising: preparing an interactive information recording table in said storage device for recording speech interactive text sentence information; receiving a speech signal from a user using said speech input device and determining target text sentence information for said speech signal, or receiving given target text sentence information as well using said text input device, in order to provide said user with different interactive modes for a speech interactive operation; performing a speech assessment on said target text sentence information and generating an assessment result of a target text sentence; updating said interactive information recording table according to said generated speech assessment result and a timing count if said target text sentence information is given and received from said text input device as well; deciding an output response of said target text sentence information according to the interactive mode, speech assessment result, and said interactive information recording table; and outputting response information using said output device according to said decided output response and said interactive information recording table. 19. The method as claimed in claim 17 , wherein said interactive information recording table records information of a speech interactive text sentence, and said information of said speech interactive text sentence is chosen from any combination of an interactive text sentence, an accumulated teaching result, an assessment threshold, a difficulty level, and response information of said target text sentence.