Give me my watch back.
(NOT Give me my watch again.)
Can you play it again?
The bike you sold me is too small.
If we buy this house and then have to move somewhere else, how easy will it be to sell it again?
Stefan can never return to his country (again).
I stood up, and then I sat (back) down (again).
Take back your money.
Count the money again, please.(NOT Count again the money.)
These shoes cost me as much again as the last pair I bought.
比起我上一次买的鞋，这双的价钱贵了一整倍。