请问这句中的might是怎么回事？

王凡往返

might这里是怎么回事，是写错了么？还是我没有理解什么？

pan

There are a few word omitted after "might" here.
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- G% w3 E3 [$ ?, Y1 n3 g# c6 G2 X5 p, EImitate means "mimic", as mischievous school might (mimic) a teacher behind his/her back.
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I would say such usage is rather common.
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2 \  Q1 n) C9 K+ l8 RPan.

pan

Or ... schoolchildren might (do an impersonation of) a teacher after their back.

Pan.