I was finding it hard to stay awake.
我已困得难熬。
He lies awake at night worrying about his job.
他担心工作，夜晚躺在床上睡不着。
Suddenly he found himself awake and fully alert.
突然他发觉自己醒了过来，而且高度警觉。
His speech is bound to awake old fears and hostilities.
他的'发言必然要激起昔日的恐惧和敌对情绪。
I can't stay awake any longer.
我瞌睡得再也熬不住了。