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请大家说说expend offer cost charge在具体用法上有哪些区别?

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请大家说说expend offer cost charge在具体用法上有哪些区别?
同上.
请大家说说expend offer cost charge在具体用法上有哪些区别?
expend “花费”,正式用语,指某人为特定的或有价值的目的而花费钱、时间或精力,而且涉及的数额较大.
例句:They expended a large sum of money to build the mansion.
他们花巨资建造这座大厦.
cost “价格为”“(使)花费”,指某事、某物使某人花费金钱、劳力或付出代价等,有时也用于指时间.
例句:Making experiments like this costs much time and labor.
做这种实验要花很多时间和劳力.
charge 索价;对...索费;课(税)[O1][(+for)]
This store often charges only 65 US cents a dozen for large eggs.
一打大鸡蛋在这家店里常常仅卖六十五美分.
offer 出(价);开(价)[O1]
We offered him the calculator for US$50.
这计算器我们向他开价五十美元.