《香山红叶》中“上弦”一词,课本是这样注释的:“每个月的上半月,月球逐渐由新月变成满月,这时的新月,西半是光亮的,东半是阴暗的,称上弦月。”这条注释有两处没有说清楚,其一是没有说清“每个月”究竟是指公历的月还是农历的月,其二是把“新月”与“上弦月”混淆起来了。我们知道,上弦是月相的一种,是月亮盈亏现象之一。我们在地球上看月亮,日期不同,它的形状也各不一样:或象镰刀,称蛾眉 “Xiangshan Hongye” in the “winding” the textbook is commented: “The first half of each month, the moon gradually from the new moon into a full moon, then the new moon, the western half is bright, the east half is dark , Said the winding month. ”There are two notes did not make it clear, one is not say“ every month ”refers to the calendar month or lunar month, the second is the“ new moon ”and“ winding Month ”confused. We know that the winding is a phase of the moon is one of the phenomenon of profit and loss of the moon. We see the moon on Earth, different dates, its shape is also different: or like a sickle, said the eyebrows