选修6 unit5知识点.

Unit 5 The power of nature

Language points

预习导学:

Ⅰ重点单词:

1.火山n. ______________

2. 在旁边;沿着边adv. 在……旁边;沿着··的边prep. _____________

3.波浪;波涛n. 波动,起伏;挥手vi _____________

4.潜在性,可能性;潜能n. 可能的;潜在的adj ______________

5.射中;射伤Vt _______________

6.惊慌vi &vt. 惊慌;恐慌 n. _________________

7.欣赏;感激;感谢n. ___________________

8.保证;担保vt. ________________.

9.(指火山爆发;突然发生 vi ___________________

10.任命;委派vt ______________-----约定;任命n._________________

11.绝对的;完全的adj. ________________ -----绝对地;完全地_______________

12.一套外衣;套装n. 适合;使适宜vt._________---合适的;适宜的adj.

____________

13.实在的;实际的adj. _____________ ---实际上adv. _________________

14.忧虑的;不安的adj.______________---不安地adv. ________________担心;焦虑;渴望n. ____________

15.多种多样的;不同的adj. ________________----多种多样,多样性n,

______________

Ⅱ重点短语:

1.前往 ___________________

2.匆匆看一遍________________

3.由·到·不等______________________

4.生产;产生______________

5.与·相比______________________

6.保护·免受··伤害_______________________

7被委派为·__________________8.即将做某事;马上就要做某事

_______________________ 学习目标:master the usage of the important new words and expressions

重点难点:consider, risk,

Having collected and evaluated…,

burn to the ground, make one’s way, enthusiastic

学习过程:

1. Have you ever considered how weak humans are compared with a volcano, hurricane or earthquake? 你是否想过, 和火山, 飓风或地震相比人类是何等脆弱。

consider 思考, 主要用于:consider +名词/-ing形式:

他正在考虑出国留学。_________________________________________

consider + wh-:

我们仔细考虑应该如何帮助他们。_______________________________

consider + 副词:

要慎重考虑后再作决定。___________________________________

2. Do you enjoy taking risks?

risk n. 风险,危险:

He was taking a risk by overtaking on a bend.

他在转弯处超车是在冒风险。

短语联想:

at risk 在危险中:

不系安全带真的会有危险。________________________________________ at the risk of 冒……危险

尽管似乎无理,恐怕我还是必须拒绝你的要求。

_______________________________________ 3. Having collected and evaluated the information, I help other scientists to predict where lava from the volcano will flow next and how fast.

[考点] Having collected and evaluated是动词-ing形式的完成式, 说明它表示的动作在主要谓语表示的动作之前发生。

[考例1]

The storm left, _____ a lot of damage to this area. (2005全国卷I

A. caused

B. to have caused

C. to cause

D. having caused

[考例2]

_____ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home. (北京2004

A. To wait

B. Have waited

C. Having waited

D. To have waited

4.Many houses have been covered with lava or burned to the ground.

许多房屋被熔岩覆盖或烧毁。

burn to the ground 指楼等被烧毁

他无处栖身因为他的房子被烧掉了。

________________________________________________ 短语联想:

burn away 烧掉