1，Should all the water on the earth disappear one day, what would happen? 假若将来有一天水在地球上全部消失，那会怎样呢？
2，Should he fail in the examination, he would have to wait for another year. 如果他在考试中失败，他将不得不再等一年。
3，Should you be fired, your health care and other benefits will not be immediately cut off. 如果你被解雇，你的医疗和其他福利不会立即被切断。
4，Should you submit yourself to him? 你应该服从他吗？
5，Should he agree to go there, we would send him there. 要是他答应去的话，我们就派他去。
