While sweeping the floor, I found his pen lying on the ground.
扫地的时候，我发现他的钢笔掉在地上了。
My pen is on the floor. Will you please pick it up for me?
我的钢笔在地板上，请你替我捡起来好吗？
The boy found his pen on the floor.
这个男孩在地板上找到了他的钢笔。
哦，你的钢笔在地板上。
While/ When/ As I was sweeping the floor, I found your pen.
我扫地的时候，发现了你的钢笔。
While/ / When/ As I was sweeping the floor, I found your pen.
我扫地的时候，发现了你的钢笔。 。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor. Imagine an earthquake shock shaking the floor, the paper, you and your hand.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，假定地震发生了，地板、纸、你和你的手都会动，重物和笔都却不运动。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor. Imagine an earthquake shock shaking the floor, the paper, you and your hand.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，假定地震发生了，地板、纸、你和你的手都会动，重物和笔都却不运动。
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