The sale was supposed to last for a week, but for all practical purposes it's over.

减销售原来预料要持续一周, 然而已经束了。

Your daughter does so little work at school, Mrs Brown, that for all practical purposes she might as well not be here at all.

布朗太太，您的女儿几乎不怎么学习，她根本不用来学了。