Oughtness
有义务的状态
🗣️ 情景例句
There's a park over there. Let's walk in the park for a while.
那边有个公园。我们去散散步吧！
You can use quarters, dimes and nickels.
你可以使用2角5分、1角和5分三种硬币。
He himself has done it lots of times!
他自己就已戒了很多次了！