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2. Longman Grammar of Spoken and Written English;Biber,1999
3. The Functional Analysis of English: A Hallidayan Approach;Bloor,2013
4. Structure and Function: A Guide to Three Major Structural-Functional Theories: Part 2: from Clause to Discourse and beyond;Butler,2003
5. Structure and Function: A Guide to Three Major Structural-Functional Theories: Part 1: Approaches to the Simplex Clause;Butler,2003