1. Give an example of a child. If a good friend tells him a story while he is playing with toys, he will certainly not listen to the story carefully. When the next good friend asks him what he thinks of this story, he may not be able to answer it, and his friends will be unhappy.

2. Similarly, the teacher will not know what the teacher is talking about if he does other things. Finally, when the teacher assigns homework, he will not know what to do.

3. The teacher's lecture shows that the teacher is working hard. Not listening to the teacher carefully is a disrespect for the teacher's labor achievements.

4. Copying books can be done at other times. You should learn to arrange the time of class homework and extracurricular homework, and form good study habits from an early age. Only in this way can your academic performance get better and better.