Study on citation practices in academic writing from the perspective of pragmatic identity theory 并列题名：Study on citation practices in academic writing from the perspective of pragmatic identity theory Study on formation mechanism of consumer's croo-buying from the perspective of attachment theory Study of William Faulkner's time art from the perspective of mirror stage theory Study on the economic law liability from the perspective of National adjustment theory Study of sentential accent in Chinese discourse from the perspective of pragmatics Study of nabokov's fiction from the perspective of space Narrative theory Metaphor in advertising from the perspective of relevance theory Study on economic justice from the perspective of Marx's labor critical theory Study on the language policy of European Union from the perspective of collective identity