New Words：
sneak [sni:k]
v.溜；潜行；偷偷地走；偷偷地做；偷偷摸摸；偷拿；偷带
Sample Sentences：
The cat ate the food and sneaked off.
He sneaked away in the middle of the meeting.
I sneaked a cake when they were out of the room.
James loves sneaking up on his sister to frighten her.
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.