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- I will make good preparation before class, class attendance seriously, after careful review. 我会在课前好好预习，上课时认真听讲，课后认真复习。
- Selection and application of appropriate teaching material,sufficient preparation before class and applying nimble teaching style have received satisfactory results. 选择恰当的教材、充分的课前准备、采用灵活多样的教学方法在神经外科全英语授课中收到了良好的效果。
- experimen preparation before class 实验预习
- Full Preparation before Class is the Key to the Improvement of Teaching Quality 认真做好课前准备工作是提高教学质量的关键
- Every day before class begins the teacher always calls the roll. 每天在开始上课前，老师经常要点名。
- Run through your notes before class. 上课前把笔记复习一下。
- I'll call the roll before class. 课前我要点名。
- I will call the roll before class. 课前我要点名。
- We do morning exercise before class every day. 我们每天课前做早操。
- You don't have to recite the text before class. 你不必在上课前背书。
- Did you revise/go over the lessons before class? 课前功课复习了吗?
- Check the mower according to the section "Preparation before use". 参考“使用前的说明”章节检查割草机。
- He always greeted Yaser warmly before class. 上课前他总是热情地与亚瑟打招呼。
- Please erase the blackboard before class. 请在课前，把黑板擦干净。
- Just one minute before class, Saro came over. 瓜花点缀的庭园，带来不少色彩。
- I ask you to make preparations for it before class. 我要求大家课前做好一定准备。
- How mang minutes are there to go before class? 还有几分钟（上课）？
- What is we need prepared before sales briefing? 销售会议前需要准备什么?
- Please tune up your instruments before class. 请在上课前调好乐器的音调。
- Some authors make thorough mental preparation before they put pen to paper. 有些作者在下笔之前已经完全打好了腹稿。
