expend与spend的区别

expend较正式用词，通常指为某一专门目的而花费大量金钱、时间或精力；

spend普通用词，与cost基本同义，意思是花费、消耗、度过，但主语必须是人。

相关介绍

例句：

She expended all her efforts on the care of home and children.

她把所有精力都花在料理家务和照顾孩子上。

Children expend a lot of energy and may need more high-energy food than adults.

孩子们消耗很多能量，可能比成年人需要更多高能量的食物。

I think it is safe to say that very few students expend the effort to do quality work in school

我认为可以肯定地说学校里很少有学生肯为学好功课下功夫。

I spent what little time I had with my family.

我仅有的一点儿时间都和家人在一起度过了。

The money could be better spent on more urgent cases.

这笔钱用于较紧迫的事情也许会好些。

I spent most time on the first question.

我在第一个问题上花的时间最多。