lose的用法包括它的其他形式(loss,lost),举例句,

loss是名词：损失,遗失,失败,输,浪费,错过
His death is a loss for us.他的死对我们来说是个损失
lose是动词；遗失,浪费,错过,输去,使失去,使迷路,使沉溺于
They lose many books just now.他们刚刚丢失了很多书.
lost是形容词：失去的,丧失的,错过的,迷惑的,不为人知的；
She was lost in the forest last night.她昨晚在森林里迷路了
同时也是lose的过去式.
词性不同,用法也就不同,跟汉语一样.