I. CDA
3-dimentional
text: Describe
discursive: Interpret
social practice: Explain
AGENT PROESS MEDIUM
text analysis methods:
1. transitivity
2. 语气系统
3. 情态系统理论
4. 语法隐喻
II. Positive DA
Martin(1999)positive discourse analysis: solidarity and change
MDA
Ecological DA
methodology: sfa,认知语言学