He taught us history when we were in junior Grade Two.

初中二年级的时候他教我们历史。

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He is one of my respected teachers. He taught us history when we were in junior Grade Two.

他是我最尊敬的老师之一。初中二年级的时候他教我们历史。

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We selected two three-grade natural classes from Dongjing Junior Middle School in changsha, divided into the experimental class and the control class.

在长沙市洞井中学选取初三年级两个自然班，分别为实验班与对照班。

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