New words：

decade ['dekeid] n. 十年

Sample Sentences：

We've been married a decade.
Nine years plus one year equals a decade.
Prices have risen steadily during the past decade
It will be at least another decade before we know if he was right.

New words：

colleague ['kɔli:g] n. 同事；同行；同僚

Sample Sentences：

I had a colleague who died decades ago.
My colleague has broken off the habit of smoking.
We were friends and colleagues for more than 20 years.

decade ['dekeid] n. 十年

New words：

innocent ['inəsnt] adj. 无辜的；清白的；无罪的；无辜受害的；无知的, 天真纯洁的

Sample Sentences：

He insisted he was innocent.
He declared that he was innocent.
Don't be so innocent as to believe everything you hear.

New words：

jealous ['dʒeləs] adj.吃醋的；妒忌的；妒羡的；忌妒的
be jealous of 妒忌

Sample Sentences：

He was jealous of Tom's wealth.
He is jealous of his colleague's success.
Children often feel jealous when a new baby arrives.
Should I be jealous? There's nothing to be jealous of.

colleague ['kɔli:g] n. 同事；同行；同僚

New words：

cage[keidʒ] n. 笼子
v.把（动物）关在笼中

Sample Sentences：

They caught the fox and caged it.
After the tiger was caught, it was caged.
The old man wants to buy a cage for birds.
Criminals are kept in the cages on this island.