It's already a quarter to eleven.

现在已经是十一点差一刻了。

It's a quarter to eleven.

现在是十点四十五分。

At a quarter to eleven they get on the taxi.

他们在十一点差一刻上了出租车。

Flight 105 to Germany takes off at a quarter to eleven a. m...

去德国的105次航班上午十时四十五分起飞。