方法选取小学四年级和六年级的学生作为实验对象，采用自行设计的学业成绩奖励模式与现有的学业成绩奖励模式作为自变量进行比较实验。
Methods The students form a normal secondary school and those of Grade two , Grade four , Grade six form a primary school are chosen as the subject for the experiment.
他受到了奖励，这是对他过去一年的成绩的肯定。
He received the award in recognition of his success over the past year.
迈克尔的优异成绩获得了两次奖励。
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