他聚精会神地听课。
He listens to the class with full attention.
to concentrate one's attention (idiom)
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
他聚精会神地听课。
He listens to the class with full attention.
谁在聚精会神地看书?
Who is reading with full attention?