用作定语
▲~+n.
I have ever witnessed a fearful accident.我曾目睹一场可怕的事故。
What a fearful waste of time!简直太浪费时间了!
用作表语
▲S+be+~+prep.-phrase
He was fearful of her anger.他害怕她生气。
She was fearful of wakening the baby.她生怕吵醒婴儿。
▲S+be+~+that-clause
The nurse on duty was fearful that the patient should get worse.值班的护士担心病人的病情会恶化。