求助这两篇文献。谢谢!
Biber, D.,Conrad, S.&R. Reppen. 1998. Corpus Linguistics: Investigating Language Structure and Use [M].Cambridge: Cambridge University Press.
Biber, D. Johansson S.,Leech G,Conrad S.&E. Finegan. 1999. Longman Grammar of Spoken and Written English [M].London: Longman.
Biber, D.,Conrad, S.&R. Reppen. 1998. Corpus Linguistics: Investigating Language Structure and Use [M].Cambridge: Cambridge University Press.
Biber, D. Johansson S.,Leech G,Conrad S.&E. Finegan. 1999. Longman Grammar of Spoken and Written English [M].London: Longman.