奥巴马梦想与责任：
Hello, everybody! Thank you. Thank you. Thank you, everybody. All right, everybody go ahead and have a seat. How is everybody doing today? How about Tim Spicer? I am here with students at Wakefield High School in Arlington, Virginia. And we’ve got students tuning in from all across America, from kindergarten through 12th grade. And I am just so glad that all could join us today. And I want to thank Wakefield for being such an outstanding host. Give yourselves a big round of applause.
在这一段话里All right, go ahead分别的意思是？，在How is everybody doing today?中doing的意思是？
All right, everybody go ahead and have a seat. How is everybody doing today?
1. All right. 本句用作“客套语”，也没什么特别的意思。主要还是引起大伙的注意，注意下文要说的话。
2. go ahead，字面意思是“朝前走；前行”。引申“着手做某事；请做某事”，可以跟后面的have a seat 结合起来理解：大伙请坐/开始坐下吧。
3.How is everybody doing today? ——这是一句问候语。大家常说：
How are you doing today? 你今天过得如何？ 你今天怎么样？
