She is scared of going out alone.
她不敢一個人外出。
If you ask me, she's too scared to do it.
依我看，她被嚇得不敢做了。
The thieves got scared and ran away.
小偷害怕了，就跑了。
I was scared to death.
我嚇得要死。
'Scared stiff' is an apt description of how I felt at that moment.
“嚇得呆若木雞”是對我當時感受的貼切描述。