No, you sound different today.

没有，今天你的声音听起来不一样。

You must have the wrong number.

你一定打错电话了。

We're organizing an informal party, and I'd like you to come.

我们计划组织一个非正式聚会，我想请你参加。

Hello, this is Wang Ming. May I speak to Gao Ling, please?

喂，我是王明，我可以和高玲通话吗？

OK, we have let you know as early as possible.

好的，我们会让你们尽早知道。

Will you come over to help me with the tough job?

您能否来帮助我做这项艰苦的工作？