1) guarantee vt. 担保；保证；允诺；n.担保物；抵押物；保证书

　guarantee sb. sth. /guarantee sth. to sb.向某人保证某事

　guarantee to do sth. 保证做某事

　guarantee sth.(to be)．..保证......(是......)

　guarantee that... 保证...

　guarantee sb./sth. against/from保证...不受/免遭...

　be guaranteed to do sth. 保证做某事

2)give/offer/provide a guarantee 提供担保

　under guarantee在保修期内

eg.1)Take this opportunity，and I guarantee that you won't regret.

抓住这个机会，我保证你不会后悔的。

　2)We guarantee to deliver your goods within a week.

我们保证一周内交货。

　3)That kind of behavior is guaranteed to make him angry.

那样的行为肯定会让他生气。

　4)My watch is still under guarantee，so they'll repair it for free.

我的表还在保修期内，他们会免费给我修理。

　5)He gave me a guarantee that it would never happen again.

他向我们保证这种事情决不会再发生。

4.score n.

1)二十(twenty)（单复同）

a ( three) score, three score and ten

a (three) score of people, three score of eggs

scores of 许多 scores of years 许多年

dozen n. 一打,十二个 (不加s)

a dozen, three dozen

可由many, several, how many 修饰，但不加-s也不加of

a (three, several, many) dozen books

They sold three dozen copies of the magazine.

当dozen 后接these, those, them, us时，先加of再接这些词

two dozen of those books

two dozen of them

be sold by the dozen

dozens of 许多

dozens of books, dozen of them

2）n.(游戏或比赛)得分，比分；(考试)分数；

keep score记分

The score is 2-4.

vi.& vt.得分，评分，记分；二十

score a goal进球

score full marks得满分

score a success/victory取得成功/胜利

① ___ of birds were killed. A. Score B. Three score C. Three scores D. Two dozens