Perfectivity
动词的完成式
🗣️ 情景例句
Will dinner be served on this train?
火车上供饭吗？
Yes, there is. We can give a 5% discount for orders over 5,000 units.
是的，有折扣，超过5000个我们可给5%的折扣。
Where have you been?
你去哪儿了？