hour的复数形式是什么

例句：

1、It will take about an hour to get there.

到那里大约需要一小时。

2、 It takes at least an hour to get home from work.

下班回家至少得花一个小时。

3、 I use the Internet at work, during my lunch hour.

我上班时在午餐时间使用互联网。

4、The journey took her the better part of an hour.

旅程花去了她半个多小时。

5、 I need about an hour to finish off this report.

我需要一小时左右结束这篇报告。