问题描述：
1.how many of the class went to the party?为什么不用how many classes went to the party?前一句的class为什么不加es呢?
2.I can tell you she is a student.这句是从句吗?这不明明是两个句子吗?tell 的宾语是you
2.I can tell you she is a student.这句是从句吗?这不明明是两个句子吗?tell 的宾语是you
问题解答：
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