cost有没有单三形式?如The coat cost him 300 dollars.还是The coat costs

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cost有没有单三形式?如The coat cost him 300 dollars.还是The coat costs him 300 dollars.不会的不要乱说,要考试了!

其实每个动词都有单数第三人称形式,只是会不会这样用而已.
像你举得这个例子,cost这个词,一般不会用一般现在时,所以不存在使用单三形式的问题.
cost基本都是一般过去时使用的.除非描述一个事实的时候.比如,that D&G shirt costs much. 就是说这个东西很贵.
再问：如果在考试中，就像刚才那个句子一样，有两个选项，一个cost,另一个costs。这时，应选哪个？谢谢！
再答： costs

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