cost的用法(有一题有点疑问)--How much does the computer ----(cost)--Eight thounsand yuan.请问cost用加s吗,说明下理由可以么

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cost的用法(有一题有点疑问)--How much does the computer ----(cost)--Eight thounsand yuan.请问cost用加s吗,说明下理由可以么
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cost的用法(有一题有点疑问)--How much does the computer ----(cost)--Eight thounsand yuan.请问cost用加s吗,说明下理由可以么
cost的用法(有一题有点疑问)
--How much does the computer ----(cost)
--Eight thounsand yuan.
请问cost用加s吗,说明下理由可以么

cost的用法(有一题有点疑问)--How much does the computer ----(cost)--Eight thounsand yuan.请问cost用加s吗,说明下理由可以么
不用加 s
前面有does,则动词用原形.

不加
前面已经有助动词does了

cost
前面有了助动词does ,后面的动词要恢复原形。