文档介绍：Unit 3
保护我们的星球
Part 1
—in spite of
Despite the hardship, he still accepted the challenge.
responsible for—take the duty of
You should be responsible for the mistakes you made.
3. A large number of –a lot of
4. Range from… to
The students range from 14 to 20.
What is not in doubt, however, is the devastating effect (that) humans are having on the animal and plant life of the .
No body would deny the fact that human beings are doing tremendous damage to the animal and plant life on the earth.
一点是毫无置疑的,那就是人类正在对地球上的动、植物生活造成致命的破坏。
Pa 2.
e extinct—disappear
Carry on—continue
We can carry on our discussion after lunch.
A flood of –a series of 一系列的
So, if you lose a key species, you might cause a whole flood of other extinctions.
所以,如果失去一个重要的物种,那也许会引起大量其他物种的绝迹。
Pa 3
intractable—very difficult to handle
Unlike global warming and ozone depletion—which, if the political will was there, could be reduced by cutting gas emission— preserving bio-diversity remains an intractable problem.
虚拟语气(subjunctive mood)
与现在事实相反
主语+could/should/might/would if 主语+ved
If I were you, I wouldn’t do it like that.
I would telephone her if I had her phone number now.
虚拟语气
虚拟语气是一种特殊的动词形式,一是用来表示说话人所说的话不是一个事实,而是一种假设、猜测、怀疑等(在条件从句中或让步状语从句中);一是表示说话人的愿望、要求、命令、建议等(在宾语从句、表语从句、同位语从句)。
虚拟语气的概念
一、虚拟语气在条件句中
虚拟条件句
主句
与现在事实相反的假设
与过去相反的假设
与将来相反的假设
If+主语+动词的过去式
(动词be用were)
主语+should,would,
might,could+动词
原形
If+主语+had +过去分词
主语+should,
would, might, could
+have done
1、If+主语+动词过去式
2、If+主语+were to+ 动词原形
3、If+主语+should +动词原形
主语+should, would
might, could+动词
原形
eg:If I had time, I would attend the meeting. If he had hurried ,he could have caught the train. If I were to go abroad ,I would go to America.
如果我是你,我就会努力学习.
如果我知道他的电话号码,我就给他打电话了.
如果明天下雨的话,我们会取消比赛.
If I were you, I would work harder at my lessons.
If I had known his telephone number, I would have called him.
If it should \were to rain, we would call off the match.
More practice:
使用虚拟条件句要注意的几点:
1. 当条件状语从句表