What are you doing? 你做什么呢？

I'm chatting on the Internet. 我在网上聊天。

Whom are you chatting with?  你和谁聊天呢？

With my boyfriend. 和我的男朋友。

Are you online now? 你现在在线吗?

Are you online now? 你现在在线吗？

Yes. What's the matter? 是的。什么事？

I sent an Email to you just now. 我刚刚发了邮件给你。

Oh, let me see. I can' find it. Did you send it to a wrong mailbox? 哦，我看看。找不到。你是不是发错邮箱了？

I don't think so. Wait a moment. Maybe you'll receive it later. 我想不会错。再等等，大概一会儿就能收到。