1. I have been studying in China for three years
2. I have studied in China for three years
3. I used to study in China for three years
4. I studied in China for three years
但我想知分別,例如分別用係咩時候, 可以詳細小小嗎
例如邊句係我已經離開左大陸, 邊句仲係大陸讀緊.
THANKS!!
更新1:
我明present perfect tense係對現在有影響... 咁但係如果已經走左..點解仲對現在有影響既? 而唔係普通past tense