I need to post a letter.

我得去寄封信。

No way. I must get everything ready before noon.

不行啊，我必须在中午前把一切都做好。

Thank you. Yes, actually Mary and I have been planning this for some time.

谢谢。其实玛丽和我已计划了很久。

Thanks for asking.

谢谢你的邀请。

No, thank you. Please tell him to phone me when he comes back.

不了，谢谢。他回来时，请告诉他给我打个电话。

My, what a downpour! And there doesn't seem to be any sign of its stopping.

哎呀，好大的雨呀！没有一点像要停的样子。