Usages of yàoshi
她 出门 前 在 镜子 旁边 找 了 很 久， 才 找到 钥匙。tā chūmén qián zài jìngzi pángbiān zhǎo le hěn jiǔ, cái zhǎodào yàoshi.
Before going out, she searched for a long time by the mirror before finding her keys.
你 进门 以后 记得 把 钥匙 放 在 包 里， 别 又 找不到。nǐ jìnmén yǐhòu jìde bǎ yàoshi fàng zài bāo lǐ, bié yòu zhǎobudào.
After you come in, remember to put the keys in your bag; don’t lose them again.
她 忘了 带 钥匙， 只好 在 门口 等 室友 来 开门。tā wàngle dài yàoshi, zhǐhǎo zài ménkǒu děng shìyǒu lái kāimén.
She forgot to bring her keys, so she had no choice but to wait at the door for her roommate to open it.
你 今天 带 钥匙 了 吗？nǐ jīntiān dài yàoshi le ma?
Do you have your keys with you today?
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