There is only an American student in the school. 改错. 错哪了,我找不出来.
问题描述：
There is only an American student in the school. 改错. 错哪了,我找不出来.
答
There is only one American student in the school.为什么非得改成one呢？没有only an的用法吗？这个句子很明显是强调数字一，所以用数词，而不用不定冠词