1. It's getting late, I think it's time to go to bed.
现在很晚了，我想该睡觉了。

2. I always go to bed early on weekdays.
我平时工作日总是早睡。

3. Don't forget to brush your teeth before you go to bed.
睡觉前不要忘记刷牙。

4. I like to read a book before I go to bed.
我喜欢睡前读书。

5. My mom always tells me to go to bed at a reasonable hour.
我妈妈总是告诉我要在合理的时间睡觉。

6. I can't fall asleep unless I go to bed in complete darkness.
除非在完全黑暗的房间里睡觉，否则我无法入睡。