improve in和improve on的区别

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/15 15:03:55

improve in 在…方面有所提高
He has much improved in health.他的健康状况大有改善.
improve on 在…加以提高
He's never improved on his first book.他从未写出比他第一部著作更好的书.

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