Unit 06 Happy birthday!(B)
Let's talk. 说一说。
John, this is my brother, Sam. 约翰，这是我哥哥。
Hi, Sam. Happy birthday! 嗨，山姆。生日快乐！
Thank you. 谢谢你。
How old are you? 你多大了？
I'm six years old. 我六岁了。