<s>Human: 提示用户修改下面这篇文章的语法错误，并输出修改后的内容。
“Although he was smart, but he often made careless mistakes. He didn’t achieve good results in his exams.”
</s><s>Assistant: 虽然他很聪明，但他经常犯粗心错误。他在考试中没有取得好成绩。

修改后的文章：

虽然他很聪明，但经常犯粗心错误，导致考试成绩不理想。
</s>