You cannot ask for your money back before the agreed date.在商定的日期之前你不可以把钱要回去。We refused to pay because the goods were not delivered by the agreed date.我们拒绝付款，因为他们没有按约定日期交货。You'll have to speed up your rate of work if you want to finish by the agreed date.如果你要在约定日期前完成工作，你得加快速度。