要打电话给某人，你需要拨号他们的号码。

To call someone, you need to dial their number.

你说了，假如我需要帮助，就打电话给某人。

You said if I need help to call somebody.

我曾经打电话给某人,因为我想告诉他们什么。

I have called someone because I want to tell them something.

这句话可表示对太早打电话给某人感到抱歉。

I'm sorry to call you so early.