6. tend to vi.　1. 走向;趋向

Old people tend to get fat.

老年人容易发胖。

He tends towards selfishness.

他有自私自利的倾向。

5.　　　 serve as　vt. 为...服务;为...服役，侍候(顾客等);供应(饭菜)，充当

Children must be educated to serve their country when they grow up.

必须教育孩子长大后为国家服务。

She served me a cup of coffee.　她给我端上一杯咖啡。

The room served as an operation room temporarily. 那间屋子临时充当手术室。　

4.　　　 survive　vt.. 在...之后仍然生存,从...中逃生

Only two passengers survived the air-crash.　这次飞机失事只有两名乘客幸免于死。

vi. 活下来,幸存;残留

Few survived after the flood.　洪水后极少有人生还。

3.　　　 root　n. (植物的)根; 根;根基;本质

These plants have very deep roots.　这些植物的根长得很深。

This is the root cause of poverty.　这是贫穷的根本原因。

vi.生根　根源在于,来源于

Some plants root easily.　有些植物容易生根成长。

The crime rooted in his greed for money.　这一犯罪行为起因于他对金钱的贪得无厌。

2.　　　 in terms of　就...而论;在...方面

In terms of money, he's quite rich, but not in terms of happiness.

就钱来说他很富有,但就幸福来说就不然了。

1.　　　 date back to , date from 从。。开始，起源于，上溯到

The Sanxingdui site is said to date back to 5000 years ago.

三星堆遗址据说开始于5000年前。

6. versus　 prep. (法律和运动用语,常略作v.或vs.)对;对抗

The big match tonight is England versus Spain.

今晚的大赛是英格兰对西班牙。

Robinson versus Brown

鲁宾逊对布朗的诉讼

prep. 与...相对

the problem of mercy versus revenge

饶恕与复仇相抗衡的问题

Unit 20　 Archaeology

Teaching aims: Vocabulary revision

　　　　　　 Grammar revision

Teaching main-points: Vocabulary and grammar revision in the process of the integration between the teacher and the ss

Teaching Crux: 1) SS’ explanation about the vocabulary and grammar

　　　　　　 2) Teacher’s further explanation and supplement

Teaching materials & focuses:

5. envy 　n. 妒忌;羡慕vt. 妒忌;羡慕

She said it out of envy. 她出于嫉妒说了这话。

妒忌的对象;羡慕的目标

His talent is the envy of his colleagues.　 他的同事都羡慕他的才能。

I envy you your good luck. 我羡慕你的好运。

4.　　　 hope for 希望，盼望

Leaders hope for peace and stability in Iraq. 领导者希望伊拉克和平稳定。

3. 出(价);开(价)

We offered him the calculator for US$50.

这计算器我们向他开价五十美元。

n.　　　　 提供,提议

Thank you for your kind offer of help. 感谢你想给予帮助的好意。