I think it's time to go to bed.

　　我想該睡覺了。

　　She would be in bed by now, as like as not.

　　這工夫她很可能睡了。

　　Could you give me a bed for the night?

　　今晚你能給我弄個睡的地方嗎？

　　Could you help me change the bed?

　　你幫我換一下床單好嗎？

　　I'm going to go to bed and read.

　　我要上床看書去。