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isn't open/ doesn't open

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isn't open/ doesn't open
怎样判断用哪个,看清楚啊,不是两者的区别
isn't open/ doesn't open
例句:the swiming pool -----(not open)we can't go toswim.要解析
isn't open/ doesn't open
isn't open,这里需要的是系表结构.一般open做动词是打开的意思,是表示一个动作,主语显然是人而不是物.