sb的全称英文是somebody。
例句:
1、有些人自以为是大人物。
Some of you are here because you think you're somebody.
2、他真是一个大人物。
He is really somebody.
3、他总这么说直到他生命的最后几年他说我知道你会成为大人物。
And he still says this, until the final years he would always say I knew you were somebody.
4、小孩:我叔叔下面有1000个人。男人:他真是一个大人物。他是干什么的?
Child: My uncle has 1000 men under him. Man: He is really somebody. What does do?
5、他们都成了某个筹备委员会成员,时刻期待着某个大人物的演说。
They are all on a committee of arrangements, and hourly expect a speech from somebody.