1、i went to school yesterday.
我昨天去学校。
2、i bought a bag the day before yesterday.
我前天买的包。
3、i dated a good friend the day before yesterday.
我前天约的好友。
4、.i finished my homework this morning.
我在早晨就已经完成了作业。
5、the light went out, and the room was plunged into darkness.
灯熄了，屋里陷入一片漆黑。