上床睡觉，估计我们最熟悉的就是 go to bed 这个表达了。
表达就寝的还有下面这几个表达
hit the sack
turn in
hit the hay
have a sleep
When did you go to bed last night?
你昨晚几点睡觉？
Its getting late, I should better hit the sack, until next time, have a good life folks.
有点晚了，我最好上床睡觉了，下次再聊，开心的生活啊朋友们。
上床以后，调整呼吸，很快就
get / go to sleep
入睡
I couldn't get to sleep last night because of the noise.
因为吵闹声我昨晚睡不着觉。
很多人上床准备睡觉前，困意来了，都会打几个哈欠，我就是哈
sleepy
[`slipɪ]
adj.想睡的，瞌睡的 = drowsy [`draʊzɪ]
It is natural to yawn when one feels sleepy or bored.
一个人会自然而然地在想睡觉或无聊时打哈欠。
* yawn [jɔn] vi. 打哈欠 & n.哈欠
睡眠好的人，很多就睡着了，进入梦乡啦
asleep
[ə`slip]
adj.睡着的
fall asleep 睡着
fast asleep 熟睡的
Henry fell a sleep on the comfortable sofa.
亨利在舒适的沙发上睡着了。
Annie opened the door gently so as not to disturb her roommates, who were fast asleep.
安妮轻轻地开门，以免打扰熟睡的室友。
一觉睡到，糟糕，闹钟居然都没吵醒
oversleep
[ˌovə`slip]
vi.睡过头
（三态为：oversleep, overslept [ˌovə`slεpt], overslept）
比较：
sleep in 睡到很晚才起床，赖床
go to bed late 很晚才睡觉
I should have met Jane at 9:30 AM, but I overslept and broke my promise.
我应在上午9点半与简碰面，但我睡过头而失约了。
真的要早睡早起，不要熬夜
stay up 熬夜
Eric advised his daughter not to stay up watching TV.
埃里克忠告女儿不要熬夜看电视。
不过现在的很多年轻人，都是夜猫子
all-nighter
[ɔl`naɪtə]
n.通宵活动
pull an all-nighter 通宵读书
burn the midnight oil 开夜车
Jack pulled an all-nighter before the exam.
杰克在考试前通宵读书。
Did you burn the midnight oil again last night?
你昨晚又熬夜了吗？
据说很大一部分上班族，多少都有点失眠的困扰
sleepless
[`sliplɪs]
adj.失眠的，不眠的
insomnia
英 [ɪnˈsɒmniə] 美 [ɪnˈsɑːmniə]
n. 失眠（症）
What Kevin said to me left me sleepless last night.
凯文对我说的话让我昨晚睡不着觉。
Acute insomnia means consistent inability to sleep well for a period of three weeks to six months.
严重失眠意味着连续三周到六个月都睡不好觉。
睡不着的时候，就会在床上翻来覆去的烙大饼
toss and turn 辗转反侧
Kathy tossed and turned all night because of a bad headache.
卡西整晚因严重头痛而在床上辗转反侧。
I try to go back to sleep and toss and turn for a while.
我努力重新入睡，辗转反侧了一会儿。
有些人是经常打鼾，我一般是偶尔累了，晚上就会打鼾
snore
[snɔr]
vi. 打鼾 & n.打鼾声
When someone who is asleep snores, they make a loud noise each time they breathe. 打鼾
His mouth was open, and he was snoring.
他张着嘴巴，打着鼾。
我一般都能自然睡醒，不需要闹钟哦
wake
[wek]
vt. 唤醒 & vi.醒（常与up连用）（三态为：wake, woke [wok], woken [`wokən]）
awake [ə`wek]
adj.醒着的 & vi.醒（三态为：awake, awoke [ə`wok], awoken [ə`wokən]） = wake up
wake sb up 叫醒某人
I sometimes wake upat four in the morning. = I sometimes awake at four in the morning.
我有时在早上4点就醒了。
get up
起床
I get upat seven every morning.
我每天早上7点起床。
"Brigid!" she screamed. "Get up!"
“布里吉德！”她尖声叫道。“起床！”