1.At that moment, with thecrowd watching me, I was not afraid in the ordinary sense, as I would have beenif I had been alone
2.The bad news was that hecould be a very dangerous person he choose to be
向刘老师请教，句子1中 would have been 后为什么可以省略 afraid，句子2中choose to be 后为什么可以省略 a very dangerous person
I was not afraid in the ordinary sense, as I would have been if I had been alone.
黑体部分= as if I had been alone. 这是as if从句展开的形式。又如：
The man lay there motionless, as if he were dead.
= The man lay there motionless, as he would be if he were dead.