Subject + 害怕 + Clause/Object
The verb 害怕 (hàipà) means "to be afraid" or "to fear." It can be followed directly by a noun or a clause describing what one fears. For example, 害怕他会伤她的心 means "afraid that he would hurt her feelings."
小时候我特别害怕打雷。
Xiǎoshíhou wǒ tèbié hàipà dǎléi.
When I was little, I was especially afraid of thunder.
她害怕一个人走夜路。
Tā hàipà yí ge rén zǒu yèlù.
She's afraid of walking alone at night.
我害怕他知道了会生气。
Wǒ hàipà tā zhīdào le huì shēngqì.
I'm afraid he'll get angry if he finds out.