an hour and a half / one and a half hours

一个半小时

The half of six is three.

6的一半是3。

Cut the apple in half / into halves.

把苹果切成两半。

France played very well in the first half.

上半场，法国队发挥得不错。

On her way to the station, half of her money was stolen.

她在去车站的路上，一半的钱被偷了。

Only half of the 50 questions were answered correctly.

这五十个问题中只有一半回答正确。

half an hour / a half hour

半小时

We lost not only some of our money, but half the fun of traveling.

我们不仅损失了一部分钱，而且还失去了一部分旅行的乐趣。

He looks half asleep.

他看上去半睡半醒。

He was half dead with tiredness.

他累得半死。

Don't leave the work half done.

工作不要半途而废。