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can和could是两个相当常用的情态动词。虽然它们的意思相同,但是在用法上,这两个单词却会表现出各自所独有的特征。现分述如下,仅供参考。
Can and Could are two quite commonly used modal verbs. Although they have the same meaning, in terms of usage, these two words will show their unique characteristics. The following paragraphs are for reference only.