New Words：

bookcase ['bukkeis] n. 书架；书柜

Sample Sentences：

They bought a bookcase to put the books on.
The bookcase contains fifty volumes but holds a hundred.
You may borrow whichever novel in my bookcase you like best.

New Words：

smash [smæʃ]
v.粉碎；破碎；猛烈碰撞；扣杀
n.打碎；破碎；破碎；扣球

Sample Sentences：

He smashed his fist against the table.
The cup dropped on the floor and smashed into pieces.
The lock was rusty, so we had to smash the door open.

He gave me a smash on my head.
There was a serious motor smash on the bridge.
We heard the smash of plates breaking in the kitchen.

New Words：

civil ['sivil] adj.公民的；平民的；国内的；国家的
civil war 内战

Sample Sentences：

The right to vote is a base civil right.
It has been 60 years since the country was divided by the civil war.
Her husband, a soldier, had been killed years earlier during the civil war.

New Words：

gain [gein]
v.获得；增加；赢得；取得；（经过努力）到达
n.增加；利益；好处；利润

Sample Sentences：

No pains, no gains.
Our army gained the battle.
He has gained rich experience in these years.
After swimming for an hour, he finally gained the shore.

New Words：

profit ['prɔfit]
n.利润；收益；利益；赢利
v.获益；得到好处；对…有用（或有益）

profit by/from 得益于

Sample Sentences：

He learned to profit by his mistakes.
You can profit by my mistakes and avoid them yourself.

We gained a lot of profit from your advice.
The company made a healthy profit on the deal.
There is very little profit in selling newspapers at present.