九年级期末复习大对碰

[知识要点]三种时态——一般过去时、现在 完成时、过去完成时 [原文] 1．-Mario,you used to be short,didn’t you? -Yes,I did．(Unit 2) 2．-Have you packed the beach towels yet? -No,I haven’t．(Unit 14) 3．By the time I got outside．the bus had already left．(Unit 10)