You'd better go to bed and nurse that cold.

　　你最好上床睡覺，把感冒治好。

　　Please turn the television off before you go to bed.

　　睡覺前請關上電視。

　　I go to bed early as a rule.

　　我一貫睡得早。

　　I think I'll have a bath and go to bed.

　　我想洗個澡，然后睡覺。

　　I go to bed early if I'm travelling the next day.

　　如果第二天去旅行我就早睡。