This is the 7798th most frequent Chinese word.
问及
To ask about; to inquire.
In this sentence, '问及' is used to indicate that the reporter asked or inquired specifically about a certain subject, namely 'his plans'.
当记者问及他的计划时，他显得很紧张。
When the reporter inquired about his plans, he appeared very nervous.
Here, '问及' conveys the action of asking about a particular topic, in this case, 'students' hobbies', for a specific purpose or reason.
老师问及学生的兴趣爱好，以便设计更有吸引力的课程。
The teacher inquired about the students' hobbies to design more engaging courses.
Here, '问及' is used to emphasize the appropriateness or inappropriateness of asking about specific topics, such as 'personal matters', in a given situation.