The method he used turned out to be _______ in improving the students' English的翻译：The method he used turned out to be _______ in improving the students' English 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

The method he used turned out to be _______ in improving the students' English

He used The method turned out to be the 'and' and 'in improving the students' ' English

The method he used turned out to be _______ in improving the students' English