听说 tı̄ngshuō to hear, told 是 shı̀ to be 美国人 měiguórén an American 对吗 duı̀ ma right? 对 duı̀ right 谁 shéi who 告诉 gàosù to tell 我的 wǒ de my 朋友 péngyou friend 真的吗 zhēnde ma really? 你的 nı̌ de your 不对 bù duı̀ not right 说错 shuōcuò to speak wrongly 听错 tı̄ngcuò to hear incorrectly 哪国人 nǎ guó rén people of which nation 别人 biérén other people 同学 tóngxué classmate 同事 tóngshı̀ colleague 认识 rènshi knowledge