to take a rain-check means to postpone something rather than cancel it E.g., - Shall we go for a coffee? - Can I take a rain-check? I have to finish the report. This means that they won't go for a coffee at the moment, but they will go for one later. It is a good term, and it comes from American English. The game baseball cannot be played when it is raining, so if you are watching a match, and it starts raining heavily and for a long time, the match will be postponed. You can get a rain-check (check = ticket) which means you can come back later (maybe the next day) and watch the rest of the match when it is re-started. The rain-check means that you don't have to pay again for another ticket.

1. a ticket for future use given to spectators at an outdoor event, as a baseball game or concert, that has been postponed or interrupted by rain. 2. an offered or requested postponement of an invitation until a more convenient, usually unspecified time: Since you can't join us for dinner, we'll give you a rain check. 3. a ticket, coupon, or the like, entitling a customer to purchase at a later date and for the same amount a sale item that is temporarily out of stock. See http://www.italki.com/answers/question/20299.htm

Hi, Hello. Tim teacher, Randy, Thank you so much!!! =D =D