The day before yesterday was busy.

前天很忙。

The day before yesterday arrived by plane.

前天乘飞机到达。

Jenny and I arrived by plane the day before yesterday.

珍妮和我是前天坐飞机到的。

He bought a new car the day before yesterday.

他前天买了一辆新车。

The weather was nice the day before yesterday.

前天的天气很好。

I went to the library the day before yesterday.

前天我去了图书馆。

She met her old friend the day before yesterday.

她前天见到了她的老朋友。

We took a walk in the park the day before yesterday.

我们前天在公园里散步。

Yesterday and the day before yesterday aren't like today.

昨天和前天均不似今天。

We came back the day before yesterday.

我们前天回来的。