there are some boys in the park.they are playing soccre.合为一句
问题描述：
there are some boys in the park.they are playing soccre.合为一句
答
正确答案：
There are some boys playing soccer in the park.
翻译：公园里有一些男孩在踢足球.
解析：原来是两个分句,合并成一个句子,用现在分词playing basketball作boys 的后置定语,对boys进行补充说明,表示现在正在做的事情
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