He became a doctor when he grow还是grew up

问题描述:

He became a doctor when he grow还是grew up
grow up是个固词,但由于有when’在而且前面是过去时,怎么办?

这句话的意思是、他长大后成为了一个医生.这句话是过去时,所以,就算grow up 是词组.也要随事态改变.grow的过去式态是grew.这里的when只是引导时间状语的连词,不用考试太多.注意时态一致就好了.