请和您的孩子谈话，告诉他们课上认真听讲，遵守纪律和服从指令。
Please speak with your child about listening in class, behaving and following directions.
数学课上认真听讲的读者朋友或许都能想起二次方程序通常有两个解：一个是正解，另一个是负解。
READERS who were paying attention in their maths classes may recall that quadratic equations often have two solutions, one positive and one negative.
事实上造成这些的原因因为他们课上不认真听讲、不努力学习或者课上捣乱所致。
In fact all of the students who struggled did so because of their lack of attention, lack of effort or disruptive behaviour.
课上要认真听讲。
在我的课上，她总是认真听讲，仔细观察。但这次的情况却完全不同。
She always watched and listened very carefully to my teaching, but this was different.
在博尔英语课上，我很积极举手发言，上课认真听讲。
At the English class in Power, I'm active to speak and study hard.
在课上大家都认真听讲的时候，他偏偏听起了随身听。
In class when everybody was listening carefully, he must turn his walkman on.
在课上大家都认真听讲的时候，他偏偏听起了随身听。
In class when everybody was listening carefully, he must turn his walkman on.
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