台湾籍旅美老师今天交给我们的句子是：
Thinking about death has made me a more present human being because it's a constant reminder that tomorrow is not a guarantee. It makes me want to be a more compassionate and giving person because when you're confronted with the idea of your own mortality you have to ask yourself: like, what mark do I want to leave on this world?
常常思考死亡让我更懂得活在当下，因为这样做可以不断提醒自己：未必会有明天。这让我变得更慈悲，也更懂得付出，因为每当你想到自己的生命有限，你就不得不扪心自问：我想在这个世界留下什么？
学习重点：
1.constant 固定的、不变的
constant (adj.) 固定的、不变的
constantly (adv.) 不断地
2.guarantee 保证
guarantee (v.) 保证
warranty (n.) 保证书
3.compassionate 同情、怜悯
compassionate (adj.) 同情、怜悯
compassion (n.) 怜悯
passion (n.) 热情
4.mortality 必死性
mortality (n.) 必死性
immortality (n.) 不朽
mortal (adj.) 会死的
immortal (adj.) 不朽的
