I turned on my torch?请问这句是什么意思?

问题描述:

I turned on my torch?请问这句是什么意思?
有三个问题,请朋友指教:
第一,I was fast asleep in the middle of the night.句中的fast是什么意思?为什么用它?
第二,I turned on my torch这句就没看懂,turn on是固定搭配吗?
第三,It had got in through an open window.(It指的是猫)这句是说猫从一扇开着的窗进来了吗?
谢谢!

1.fast 用在这里意为:深沉的,睡得很熟,相当于 deep,sound.
2.turn on 固定用于打开电器,另如:turn on the radio
3.你理解的是对的.