这个计划成功英文怎么说

这个计划成功英文可以用 "The plan was successful" 来表示。

"Successful" 是形容词，意思是 "achieving the desired result; effective"。

例如：

The plan was successful in increasing sales. (计划成功地提高了销售额。)
The team's efforts were successful in finding a solution to the problem. (团队的努力成功地找到了解决问题的方案。)

"Successful" 来自英文 "success"，意思是 "the achievement of something desired, planned, or attempted"。

例如：

The company's success is due to its innovative products and excellent customer service. (公司的成功归功于其创新产品和优秀的客户服务。)
She was determined to succeed in her career. (她决心在职业生涯中取得成功。)