一个半小时用英语怎么表达

英文：

1、one and a half hours

例句：I spent only one and a half hours.

我这么做只花了一个半小时。

2、one hour and a half

例句：I had to wait my daughter for one hour and a half.

我必须要等女儿一个半小时。

3. ninety minutes

例句： It takes me ninety minutes to get there.

我到那儿花了一个半小时。