Huang Shengen tied a small blackboard to his motorbike, together with all his teaching things and an alarm clock around his neck, and then started his ride.
黄申根把一块小黑板连同他所有的教学用品绑在他的摩托车上，把一个闹钟挂在他的脖子上，然后开始了他的骑行。
Hang a small blackboard at home.
在家里挂一个小黑板。
Teach new words and expressions on the small blackboard .
利用小黑板展示引入新词汇，目标明确。
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