Schema is the method and the way of researching the knowledge classification and effective application, which obtains the functions of reasoning, search, integration and formation. The discourse is a kind of a schema. Discourse production, according to stimulation of the writing goals, refers to the effective output of the text, during which the effective output of the vocabulary is the first step. Effective output contains precise meanings, right forms and using changeability. Therefore, on the basis of the function of schemata, the selection of the discourse words follows the process of stim...