1. A method for displaying words, comprising: receiving a speech signal; extracting a pitch contour of the speech signal; extracting an energy contour of the speech signal; performing speech recognition on the speech signal to recognize a plurality of words corresponding to the speech signal and determine time alignment information of each of the plurality of words; determining at least one display parameter of each of the plurality of words according to the pitch contour, the energy contour and the time alignment information of each of the plurality of words; integrating the plurality of words into a sentence according to the at least one display parameter of each of the plurality of words; and outputting the sentence to be displayed on at least one display device.