there has been ...这个句型能帮讲解下吗

请帮我讲解下 there be 句型 初中英语句子改错,麻烦帮我看下并解释下吗：I wonder if Tom has been there. 哪位朋友能帮我讲解下这个逻辑推理问题 there be 句型讲解 英语句型-has been? ...has been seen as...这个句型怎么用? the number of basketball players has (been) risen 这个been能去掉吗 英语句型转换绝对简单he has there three times .he been there?（对three ti there be陈述句型讲解 帮分析下这个英语句型! 帮我分析下句型,这个句型是两个同位语从句组成的吗? 帮我翻译下~She has been collecting