1. If we could stay as vigorous as we are at twelve, it would take about 700 years for half of us to die, and another 700 for the survivors to be reduced by half again.
    假如我们能保持12岁时的旺盛生命力，那么我们当中的一半人过700年才会死去，剩下的一半人再过700年，才会又减少一半。

2. It took me over half an hour to get rid of him.
    我花了半个多小时才摆脱了他的纠缠。

3. If you are lucky enough to get a sleeper, you spend half the night staring at the small blue light in the ceiling,
    即使你走运弄到一个卧铺，夜间有一半时间你会盯着车顶那盏小蓝灯而睡不着觉；

4. I had a letter from my sister yesterday.
    昨天我收到了姐姐的一封信，

5. It had been wrapped up in newspaper and it contained half the money he had lost,
    钱包是用报纸包着的，里面有他丢失的钱的一半，而且还附着一张纸条，

6. I bought two expensive dictionaries here half an hour ago,
    半小时以前我在这里买了两本很贵的辞典，

7. I had lunch at half past twelve.
    我在12点半吃的。

8. In half an hour Delia came, her right hand in a bandage.
    半小时后德丽雅回来了，右手打着绷带。

9. I have a brother and a sister.
    我有一个弟弟、一个妹妹。

10. I am eighteen, my brother is eleven, and my sister is seven.
    我18岁，弟弟11岁，妹妹7岁。