She bought a bag of apples from the market.

她从市场买了一袋苹果。

I have bought a bag of apples.

我已买了一袋苹果。

If you can imagine a bag of apples and in the middle there's one that's not good.

如果你能够想象出一包苹果，其中有一个苹果坏了。

I get there and I pick up some French bread, a bag of apples, a few bananas, some pasta, tomato sauce, and a cooked chicken.

我到那里后，拿了一些法国面包、一袋苹果、一些香蕉、一些意大利面、番茄酱和熟鸡肉。