序言

The capital of France is Paris.
布鲁塞尔是比利时的首都。
All humans are mortal.
所有的人都会死。
If it is raining, then the ground is wet.
如果在下雨，地面就是湿的。
A man who is tall can play basketball well.
高个子的人可以打篮球打得很好。
Every student in this class has read at least one book.
这个班上的每一个学生至少读过一本书。
A person who drinks too much alcohol may get drunk.
喝太多酒的人可能会醉。
If you study hard, you will pass the exam.
如果你努力学习，你会通过考试。
Water boils at 100 degrees Celsius.
水在摄氏100度沸腾。
A square has four equal sides.
平行四边形有四条相等的边。
If you eat healthy food and exercise regularly, you will stay fit.
如果你吃健康的食物并经常锻炼，你会保持健康。