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题目:
could只是can 的过去式吗
解答:
1.(用于虚拟语气,表示与现在或过去事实相反的设想)能,可以:If i could go with you,i should feel very glad.
2.(表示较can不确定的可能性)可能,大概:The weather in Shanghai could be very cold in winter.
3.(表示较can委婉的请求或建议)能,可以:Could you do me a favor?
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could be