鞋子的复数英文怎么写

　　These shoes are a little too big for me.

　　我穿这双鞋太大了一点。

　　Try these shoes for size ─ they should fit you.

　　试试这双鞋的大小，你穿应该合脚。

　　I keep a change of shoes in the car.

　　我在车里放有一双供替换的鞋。