但是他的学习速度突飞猛进，现在已经学到初三数学了。
But he was mastering the subject so quickly he had already moved onto 9th grade math.
我曾连续5年参与暑期辅导班的教学，主要辅导初三，高二，高三数学。
I have been involved in 5 consecutive years of teaching summer classes, mainly junior high guidance, high School, Senior high School.
我曾连续5年参与暑期辅导班的教学，主要辅导初三，高二，高三数学。
I have been involved in 5 consecutive years of teaching summer classes, mainly junior high guidance, high School, Senior high School.
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