Demonstrativeness
论证性（demonstrative的变体）\\n指示性（demonstrative的变体）
🗣️ 情景例句
Mr. Lu, we are very pleased to be able to offer this product to you.
陆先生，我们很高兴能提供这个产品给您。
How soon can you have your product ready?
你们多久才可以把产品准备好呢？
There is a mark of ink on his shirt.
他的衬衣上有一块墨迹。