- Concession ( nhượng bộ) ( DC )
I like spring festival so I love spring.
- Purpose ( mục đích) ( DP )
I learning English well so that I can get good job.
- Reason ( lí do, nguyên nhân) ( DR)
He failed the text because he was lazy.
- Time ( thời gian) ( DT)
When I'm free, I often play games.