《牛的睡前读物》--睡个觉还有这么多说法,HIT THE SACK 又是什么玩意？

笑话:

What does the cow tell his son at bedtime?
牛爸爸在牛宝睡觉前会对他讲什么？
答案： Dairy tales.

知识点：
Going to sleep
I am going to sleep, 我要睡觉了
He is going to sleep,  他要睡觉了
James is going to sleep,  James 要睡觉了
The children are going to sleep. 孩子们要睡觉了。
Going to bed
I am going to bed when this episode ends。 在这一集结束后，我就要去准备睡觉了。
Hit the Sack
I had a busy day today, I am going to hit the sack early. 我今天比较忙，准备早点去睡了。
Are you going to hit the sack soon? 你准备要去睡了吗？
Take a nap
Tom always takes a nap after his lunch. Tom 在吃午饭后中总要小睡一下。
My cat is taking a nap on the window sill. 我的猫咪在窗台上打盹。