half as much again as

例句：

1. 1. Hehas a half-hour to spare,so he can go for a bike ride.
   他还有半小时的空闲时间，可以去骑自行车。
2. 2.They are both good at mathematics, but they are not quite equal inability.
   他们两个数学都学得很好，但能力不相上下。
3. 3. The book is half asthick as the other one.
   这本书比另一本书厚一半。