there are some children swimming in the pool这里的孩子正在游泳池游泳!我觉得正在游泳应该是be swimming,所以句子是there are some children are swimming in the pool但是这样句子里就出现了两个动词is 似乎不对,但

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/15 05:47:47
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