A: 你好！她是谁？
A: you good! she is who?
A: Hello! Who is she?
B: 她是我的同学。她叫李月。
B: she is my classmate. she called Li Yue.
B: She is my classmate. Her name is Li Yue.
A: 她是中国人吗？
A: she is China person (question)?
A: Is she Chinese?
B: 是，她是中国人。你呢？
B: is, she is China person. you (question)?
B: Yes, she is Chinese. What about you?
A: 我是美国人。
A: I am America person.
A: I am American.
A: 你是学生吗？
A: you are student (question)?
A: Are you a student?
B: 是，我是学生。你呢？
B: is, I am student. you (question)?
B: Yes, I am a student. What about you?
A: 我也是学生。我学汉语。
A: I also am student. I study Chinese language.
A: I am also a student. I study Chinese.
B: 你同学是哪国人？
B: your classmate is which country person?
B: What country is your classmate from?
A: 他是美国人。
A: he is America person.
A: He is American.
A: 你们好！
A: you (plural) good!
A: Hello everyone!
B: 你好！你是谁？
B: hello! you are who?
B: Hello! Who are you?
A: 我是李月的朋友。你是她的同学吗？
A: I am Li Yue's friend. You are her classmate (question)?
A: I’m Li Yue’s friend. Are you her classmate?
B: 是，我是她的同学。
B: is, I am her classmate.
B: Yes, I’m her classmate.
A: 好的，谢谢！再见！
A: good, thanks! goodbye!
A: Okay, thank you! Goodbye!
B: 不客气，再见！
B: you’re welcome, goodbye!
B: You’re welcome, goodbye!
Used to introduce people or facts.
Add 吗 at the end of a statement to make it a yes/no question.
Used to indicate possession or relationships.
Used to return a question.