1. A method for constructing a Chinese dictionary, comprising: determining a probability for nominalization of a Chinese term with a given collocation term according to a determination rule and the correlation between the Chinese term and its corresponding collocations, wherein the Chinese term comprises a verb part-of-speech and a noun part-of-speech, and the Chinese term is determined to be the verb part-of-speech, wherein the Chinese term and the given collocation term are within a Chinese sentence, wherein the given collocation term is a Chinese pre-term or a Chinese post-term corresponding to the Chinese term in the Chinese sentence; modifying the verb part-of-speech of the Chinese term with the given collocation term to the noun part-of-speech when the probability for nominalization of the Chinese term with the given collocation term is higher than a predetermined value; and storing the modified noun part-of-speech of the Chinese term associated with the given collocation term in a storage device.