The boy listened attentively to the teacher's lesson.

Meaning: This sentence is about a boy paying close attention to what the teacher is teaching.

Choice of Words: Listened means to pay attention to what someone is saying or to sounds. Attentively means with full attention and concentration. Teacher refers to a person whose job is to teach. Lesson refers to a unit of instruction in a school or class. The sentence describes a boy paying close attention to what the teacher is teaching.

Alternative Expressions

Related Expressions