"没有取得好成绩" 在英语中可以说成 "not achieve good grades" 或 "not do well academically"。这个短语来自于英语学习和教育领域，表示在学习或考试中未能取得较高的分数。
例句：
He didn't achieve good grades in his exams because he didn't study enough. 他考试没有取得好成绩是因为他没有足够的学习。
She didn't do well academically in high school, but she still managed to get into college. 她高中学习成绩不好，但她还是成功地进入了大学。