He is forty years old.
他四十岁了。
The book costs forty dollars.
这本书要四十美元。
She ran forty miles today.
她今天跑了四十英里。
There are forty students in class.
班上有四十个学生。
He bought forty apples.
他买了四十个苹果。
The meeting starts at forty minutes past.
会议在四十分钟后开始。
She has forty pairs of shoes.
她有四十双鞋。
They spent forty days traveling.
他们花了四十天旅行。
The recipe needs forty grams of sugar.
这个食谱需要四十克糖。
The room can hold forty people.
这个房间能容纳四十人。
