在上完体育课之前，我刚刚用一支新笔写作业。下课铃响了，我把新笔一丢，便去上我的最爱――体育课去了。上完课回到课室，发现新买的笔不见了。我以为扔到了地上，所以蹲在地上仔细地在地板上找，但却没找着。我怀疑被人偷了。于是，我想：用“引蛇出洞”这招，看看是谁偷的。过了一会儿，我从笔盒拿出另一支新笔放在桌上。我躲到玻璃窗下窥视着，看了整整十五分钟，还没有“小偷”出现。我这才心有不甘地去上科学课。
I just finished my homework with a new pen before I finished my PE class. When the bell rang, I lost my new pen and went to my favorite PE class. After class, I went back to the classroom and found that the newly bought pen was missing. I thought I had thrown it on the ground, so I squatted on the ground and looked for it carefully on the floor, but I didn't find it. I suspect someone stole it. So, I thought: use "lead the snake out of the hole" to see who stole it. After a while, I took out another new pen from the pencil box and put it on the table. I hid under the glass window and peeped. After watching for 15 minutes, no "thief" appeared. I am not willing to go to science class.
上完科学课，我发现我的笔还在，便下定决心非捉住那个“神偷”不可。这次，我躲在门后窥视着动静。不久，我看见有个人鬼鬼祟祟地跑了进来。我注意看着他。他拿起笔就走，我气得火冒三丈，二话不说快速跑进去，一把捉住他的手。他见笔的主人来了，匆匆忙忙放下笔，但已来不及了。我用批评的语气对他说：“你以后别再偷笔了！”“知……知道了。”此时，他的脸红得像一个熟透了的苹果，低着头不敢看我一眼。
After science class, I found that my pen was still there, so I decided to catch the thief. This time, I hid behind the door and watched the movement. Soon, I saw a man sneaking in. I look at him. He took the pen and left. I was so angry that I ran in quickly without saying anything and caught his hand. When he saw the master of the pen coming, he put it down in a hurry, but it was too late. I said to him in a critical tone, "you can't steal any more pens!" "Know... I see. " At this time, his face was as red as a ripe apple, and he didn't dare to look at me with his head down.
从此，我们全班同学的笔再也没丢过了。
Since then, the pens of our class have never been lost.