There's nothing to be afraid of.

　　沒(méi)有什么要害怕的。

　　If your original request is denied, don't be afraid to pursue the matter.

　　如果你最初的要求被拒絕了，不要害怕去追問(wèn)這件事情。

　　They may be afraid of losing you.

　　他們可能害怕失去你。

　　We don't need to be afraid of them.

　　我們不需要害怕他們。