call on sb
phr. v..phr. v.. to ask someone to speak or do something, especially in a formal situation like a classroom or meeting.
phr. v.. to formally invite or request a specific person to contribute, speak, or perform a task; often used in educational or official contexts.
The teacher likes to call on students who are quiet.
During the press conference, the president decided to call on the reporter in the front row for a question.
The chairperson will call on the lead investigator to present the findings before the committee begins its deliberation.
the object is always a person or a group of people.
distinguish this from 'call on' meaning 'to visit' (less common now) and 'call for' (to demand); focus on the classroom context where a teacher selects a student to answer.
The teacher called on to me.The teacher called on me.the verb is transitive and the object follows the particle directly without an extra preposition.