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。