| 1. | His ambition is to be at the wheel of a large corporation by the age of forty . 他的抱负是要在四十岁时控制一家大公司。 |
| 2. | A person may be thrown on the scrap heap by the age of fifty when many of the best years are still ahead . 人们在五十岁时候可以被掷进废品堆,而那时他最好的工作岁月还有很多。 |
| 3. | By the age of 10 he had played the piano 在10岁的时候他已经学会了弹钢琴。 |
| 4. | He had become an olympic champion by the age of twenty 他二十岁就已经是世界冠军了。 |
| 5. | By the age of seven he could write beautifully 他七岁时字就写得很漂亮了 |
| 6. | By the age of fourteen , he had learned advanced maths 到十四岁时,他已学习高等数学。 |
| 7. | By the age of 40 , beethoven was completely deaf 贝多芬在四十岁时全聋。 |
| 8. | He made it a goal to retire by the age of 40 他开始工作,并结了婚。 |
| 9. | She was already performing in competitions by the age of ten 她在十岁时就已经开始参加比赛了。 |