40的英文是：forty；
forty：
n.四十;四十几。
复数： forties
派生词： fortieth
相关介绍
The plant provides forty per cent of the country's electricity.
全国总电量的40%是这家发电厂提供的。
After forty years in the police force nothing much shocks me
在警队呆了40年后，我对什么都见怪不怪了。
I was forty, the age when people take stock and change their lives.
我已年届不惑，到了该全面审视自己并改变生活的年龄了。
Two-way trade between the two countries increased by more than forty per cent last year
去年，两国间的双向贸易增长了40%多。
Now I can look back on the whole tragedy from a distance of forty years.
时隔40年后，现在我可以回顾整个悲剧了。
