把下列句子转化为“非谓语动词作状语”
【小题1】If you work hard at your lessons，you will pass the exam.
_______________________________
【小题2】After he read the poem a second time，he had a better understanding of it.
_______________________________
【小题3】These soccer players may grow into stars，if they’re given the right kind of training.
_______________________________
【小题4】After the girl had been warned of the danger in the street at night，she went home with a friend accompanying her.
_______________________________
【小题5】Tracy turned to a passer-by for help because she didn’t know the way to the station.
_______________________________