Chen Hao has lost his wallet on the bus. Xiaoyu tells him what to do, in order.
Chen Hao
小雨，我的钱包丢了。
Xiǎoyǔ, wǒ de qiánbāo diū le.
Xiaoyu, I have lost my wallet.
Xiaoyu
你什么时候发现的？在哪儿丢的？
Nǐ shénme shíhou fāxiàn de ? Zài nǎr diū de ?
When did you notice? Where did you lose it?
Chen Hao
刚才在公交车上，下车以后就找不到了。
Gāngcái zài gōngjiāochē shàng, xià chē yǐhòu jiù zhǎo bù dào le.
Just now, on the bus. When I got off it had gone.
Xiaoyu
里面有什么重要的东西吗？
Lǐmiàn yǒu shénme zhòngyào de dōngxi ma ?
Was there anything important in it?
Chen Hao
身份证、银行卡，还有两百多块钱。
Shēnfènzhèng, yínhángkǎ, háiyǒu liǎngbǎi duō kuài qián.
My identity card, my bank card, and two hundred-odd yuan.
Xiaoyu
先给银行打电话，停了那张卡。
Xiān gěi yínháng dǎdiànhuà, tíng le nà Zhāng kǎ.
Ring the bank first and stop that card.
Chen Hao
我已经打过了。身份证怎么办？
Wǒ yǐjīng dǎ guò le. Shēnfènzhèng zěnme bàn ?
I have already done that. What about the identity card?
Xiaoyu
去派出所补一张，带上照片。
Qù pàichūsuǒ bǔ yī Zhāng, dài shàng zhàopiàn.
Go to the police station and get a new one issued, take a photograph with you.
Chen Hao
要多长时间？
Yào duō cháng shíjiān ?
How long does it take?
Xiaoyu
我去年补过，两个星期就拿到了。
Wǒ qùnián bǔ guò, liǎng gè xīngqī jiù ná dào le.
I had one replaced last year, it came in two weeks.
Chen Hao
那我下午就去。谢谢你。
Nà wǒ xiàwǔ jiù qù. Xièxie nǐ.
Then I will go this afternoon. Thank you.
找 means only to look for; it is 到 that says you laid hands on it. 找到了, I have found it; 找不到, I cannot find it; 没找到, I did not find it. Saying 我没找 would mean you did not even look, which is not the same excuse. The same 到 serves elsewhere: 买到, to manage to buy; 看到, to catch sight of; 拿到, to obtain.
多 placed after a round number says there is a little more: 两百多块, two hundred-odd yuan; 三十多岁, in his thirties; 一年多, a year and a bit. It goes after the number but before the measure word when the number is round, and after the measure word when it is not: 两块多钱.
你什么时候发现的 and 在哪儿丢的: when the action has already happened and you are asking not about the fact but about its circumstances, the sentence is built with 是 (often left out) and ends in 的. You ask 你是坐车来的吗 and not 你坐车来了吗, because what is at issue is the means, not the arrival.
