'Let me' is suggesting that you are asking for permission or an opportunity to do something.

'Let me'是说你在请求允许或者一个机会去做某事。

Here are some examples: 这里有一些例子： 

"Let me make my own decisions."

 让我自己做决定。

"Let me offer to help you."

 让我来帮你。

"Let me open the door for you."

 让我来帮你开门。

"Let me pause and think about what we are doing."

 让我停下来想想我们在做什么。

"Let me welcome you to the neighborhood."

 欢迎你成为我的邻居。

"Let me save you the trouble."

 让我给你省点麻烦。

"Let me make a suggestion." 

让我提个建议。

"Let me try and fix your car."

 让我来试试修你的车。

"Let me taste the soup before you add more spices."

 在你加香料之前让我尝尝这个汤。

"Let me treat you to some ice cream."

 让我请你吃点冰淇淋。