The phrasal verb "call on" is moderately used in both informal and formal contexts, although it tends to appear more frequently in formal or official settings. In formal contexts, "call on" is often employed to describe making a formal request or demand, such as when a leader calls on nations to uphold agreements or when someone in an official capacity requests the participation or contribution of another person or group. In informal contexts, it can simply mean visiting someone, though this usage has become less common. "Call on" is also used in educational or meeting settings to refer to selecting someone to speak or answer a question. Its usage spans various domains, highlighting both social interactions and official communications, making it a versatile phrasal verb.
B2
UpperIntermediate
1. To ask someone to do something, especially to speak in a formal setting.
The teacher called on the student to answer the question.
During the meeting, she called on the manager to provide updates.
2. To visit someone, often to offer help or convey a message.
I will call on my grandmother this weekend to see how she's doing.
They called on their neighbors after the storm to ensure they were safe.
3. To utilize a particular quality or skill.
The coach called on his experience to navigate the team through the tough match.
She called on her creativity to solve the problem.