在他学习期间用英文怎么说

在他学习期间用英语可以说成 "during his study period"。

这个短语的来源是由两个单词组成的，其中 "during" 是一个介词，意思是 "在...期间"，"study" 是动词，意思是 "学习"，而 "period" 是名词，意思是 "期间"。因此，"during his study period" 的意思就是 "在他学习期间"。

以下是一些使用 "during his study period" 的英文例句及其中文翻译：

He made significant progress during his study period. 他在学习期间取得了重大进展。
During his study period, he learned many new skills. 在他学习期间，他学会了许多新技能。
She was very focused and discippned during her study period. 在她学习期间，她非常专注和自律。
He spent most of his time studying and doing research during his study period. 在他学习期间，他大部分时间都花在了学习和研究上。