1个半小时用英语怎么表达

　　One and a half hours are allowed for the exam.

　　考试时间为一个半小时。

　　He spoke for one and a half hours and barely paused for breath.

　　他几乎一口气没停地说了一个半小时。

　　One and a half hours is enough for me.

　　对我来说一个半小时足够了。

　　After about one and a half hours, they finished the work.

　　大约一个半小时以后，他们做完了工作。

　　I kept swimming for about one and a half hours.

　　我一直游了一个半小时。