cost、spend、expend与take的区别是什么

cost永远是物做主语,而上面两个词是人做主语.cost表示某物花费了某人多少多少钱,固定搭配：sth. cost sb. $例句：The ring cost him 100,000 dollars.The task could cost you your life.这项任务可能让你没命。spend(过去式spent)：花费,有固定词组：spend $ on sth./ (in) doing sth.例句：I spent 30 yuan on this book.I spent 4 days reading this book.(in可加可不加)spend表达的花费之意可以指花费金钱,也可以指花费时间、精力。expend 及物动词花费 [在…上],消耗 [on,upon,in]We ~ed much time and effort on the experiment.我们在该项实验上花费了不少时间和精力We ~ed a great deal of time and care in doing the work.我们做那件事花了许多时间和心血。take指做一件事、走一段路等所需的时间。