为什么是be fast asleep 而不是be fastly asleep?

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/16 04:11:59

你是说要用副词修饰形容词,这里
be fast asleep（熟睡）是固定搭配,并非形容词非得要副词修饰,形容词也可以修饰形容词,如：
She is good looking.她很漂亮.
looking .样子的,形容词.
good 形容词.

为什么是be fast asleep 而不是be fastly asleep? be fast asleep和 be wide awake be fast asleep与fall asleep的区别. I fall ___ asleep.为什么要填fast 而不是quickly fast asleep/sound asleep sleep fall asleep be asleep区别 fall asleep与be asleep区别英语词组解释1.BE SOUND ASLEEP2.BE WIDE AWAKE3.FALL FAST ASLEEP讲讲它们 fall asleep与be asleep有什么不同 fall asleep 、 be asleep、 go to sleep的区别 be asleep 、be awake （中文）解释下面词组pretend to be asleep