成绩不好用英语怎么说

如果成绩不好，我们通常会用英语说“poor performance/results”。

来源：这是一个相对通用的表达，用来描述做某事时表现不佳，或者在某种测量标准下，成绩不理想。

例句：

Despite her best efforts, she received poor grades on her exams.
尽管她尽了最大努力，她的考试成绩还是很差。
The company's poor performance in the stock market has raised concerns among investors.
这家公司在股票市场的糟糕表现已经引起了投资者的担忧。
We need to improve our poor results if we want to compete with other teams.
如果想要与其他团队竞争，我们需要提高我们的不佳成绩。