Bill: Mary, give me your pen, please．

比尔：玛丽，你的钢笔请给我用一用。

Mary: Why don't you want to write with your own pen?

玛丽：为什么你不想用你自己的钢笔写呢？

Bill: Because it always makes so many mistakes．

比尔：因为它经常产生许多错误。