连续几节课,李刚(化名)总是无精打采的,我心里想他以前不是这样的。以前他一直是班里面最活跃的一个,老师提出问题,他肯定是第一个举手。我试着叫他回答一个问题,他站起来后说:“不知道”,我心里“咯噔”一下,心想这个问题很简单,他应该能够回答上来。我没有说多余的话,只是让 For several consecutive classes, Li Gang (a pseudonym) was always listless, and I thought that he was not like this before. He was always the most active one in the class. The teacher asked questions. He must be the first to raise his hand. I tried to ask him to answer a question. When he stood up, he said, “I don’t know,” and I was “crested”. I thought this question was very simple. He should be able to answer it. I did not say anything extra, just let