我
- multiple
- surplus
- durable
- excessive
- Reporting，role-play and games
- Reading aloud，dictation and translation
- Role-play，problem solving and discussion
- Information exchange，narration and interview
- any reasons
- a reason
- reason
- the reason
- function and theme
- culture and society
- literature and linguistics
- discourse and genre
- Materials with different dialects.
- Comprehensible authentic materials.
- Materials with comprehensible new words for students.
- Materials with contents beyond students’ comprehension capacity.
