This article introduces the retrieval methods and skills about commercial economic management in the full text of databases.

During this process,economic principle and exterior factors such as network and the public media added fuel to the fire,and pushed the network language forward healthily.

Based on the pioneers researches into the interrogative level,this paper further investigates the meanings of question in particular,and represents its two major components: the interrogative level and the interrogative scope and their source in terms of the economic principle of language,the information content questions and the yes-no answer.

The economic principle of least efforts and the communication principle of dynamic contextual adaptation explain the process of the phenomenons decoding.

Enlightenment to English-learners by Language Economy Principle

After a summary of the conceptual knowledge of nominalization by systemic- functional linguistics, this paper mainly takes the cognitive approaches, illustrating the philosophical ground of nominalization and uses following theories : category、 figure -grounding theory 、iconicity、and economy principle to analyze nominalization in English advertising discourse.

Theoretically it makes it possible that the development of any word sense be accompanied by an enantiosemous(antonymous/complementary/contrastive)sense;however,controlled by the economy principle,only some such senses can fully develop to result in enantiosemous words.

On derivational computation perspective,each operation(move and merge) should be driven by economical principle.

Based on broad view of language and communication,we construct the theory of economical principle in broad sense and establish the mode of describing the operation mechanism,and seek the necessity and flexibility in economical law of language to realize the optional selection of language communication and the full expression of information.