情态动词:can与could的用法详解 一、表示能力 (1) 表示现在的能力，用can： my sister can drive. At this point, labor could be one or two days, or even weeks, away, with your cervix continuing to open gradually over that time. 我妹妹会开车。 everyone here can speak english. Could modal verb (request) a2 used as a more polite form of can when asking someone to provide something or do something （礼貌地请 …
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情态动词:can与could的用法详解 一、表示能力 (1) 表示现在的能力，用can： my sister can drive. At this point, labor could be one or two days, or even weeks, away, with your cervix...
