I'll meet you outside at a quarter to eight.
差一刻八点，我在外边等你。
It's time you got up. It's a quarter to eight.
该起床了，差一刻钟就八点了。
They allowed you to go at a quarter to eight.
他们允许你7点45分走。
Jane: It's a quarter to eight o'clock.
简：现在还差一刻钟就八点了。
It's now a quarter to eight and neither of them has turned up.
现在七点四十五分了，两人都还未见踪影。