1·Tea is served at four thirty.
茶点于四点半供应。
2·It is now four thirty-five.
现在是四点三十五分。
3·It's four thirty. Time to go home.
现在四点三十分了。 该回家了。
4·We go home at four thirty.
我们在四点半放学回家。
5·It's about four thirty.
现在大约四点半。
6·At four thirty, it was time to go home.
在四点半，到该回家的时间了。
7·LI LEI: Let me see. It's about four thirty.
李雷：让我看一看。大约四点半。
8·Carl: Four thirty-story apartment blocks and a shopping mall.
卡尔：四幢三十层的公寓大楼，以及一个购物中心。
9·She had a quick lunch, asked the waitress for directions to the nearest antique stores, then spent the next few hours shopping. By four thirty she was back in her room.
她很快的吃完午饭，向服务员去最近的古董店的方向，然后花了几个小时逛商店，到四点半时她回到了自己的房间。
10·Thirty minutes a day in the early elementary years and an hour in grades four, five, and six is standard, says Rosemond.
罗斯蒙德说，低年级的标准是每天30分钟，四、五、六年级的标准是每天1小时。