2 sentences

1. 我只怕他已经忘了这件事。

   wǒ zhǐ​pà tā yǐ​jīng wàng le zhè jiàn shì.

   I'm just afraid he has already forgotten about this.

   Source: Dong Chinese Dictionary

2. 既然这么晚了，他只怕是不来了。

   jì​rán zhè​me wǎn le, tā zhǐ​pà shì bù lái le.

   Since it's so late, I'm afraid he won't be coming.

   Source: Dong Chinese Dictionary