Only once did her pointer seem to have dropped. I greeted it with a slate, and the pointer tapped on the edge of the slate. Everyone laughed, and so did she.

Appreciation: this sentence vividly depicts the teacher's character through action description, such as' it seems that I fell down gently', which shows that the teacher didn't hit me and showed the teacher's love for me. But I smiled to show that I knew the teacher wouldn't hit me, which shows that the teacher has always been gentle and amiable in my heart.