1. She´s developed a chronic cough.
    她的咳嗽已成了一种慢性病。

2. I have got a cough.
    我有点咳嗽.

3. It was not unusual for him to cough for an hour.
    他常常一连咳上一个来小时。

4. I do not remember when he started to cough.
    我记不清父亲是什么时候开始咳嗽的,