exists

existing

(4)One cannot exist without air.(替换)_______

(5)The elephant is the largest land animal in existence.(英译汉)

______________________________________

(6)他是有史以来最好的演员之一。

(写作小练笔：主谓；one of, actor)

__________________________________________

考点4. suffer vi.& vt. 经历或遭受；忍受

The suffering peasants led a hard life in the old days.

It is a great pity that Liu Xiang is suffering from his injury.

很可惜刘翔受伤吃苦了。

suffer from 受苦

suffer vt. 遭受；忍受

suffer vi. 吃亏

suffering n. 困苦

(1)Nothing can make up for what they have ___________(受苦).

(2)My mother often ___________(疼痛)from backache.

(3)He ___________(吃了亏)for his carelessness.

live

大象是现有的最大的陆上动物。

He is one of the best actors who ever existed.

suffered

suffers

suffered

(4)What is the patient suffering from?(英译汉)

______________________________

(5)她在学习上遭受了挫折。(写作小练笔：主谓宾; defeat)

__________________________________

【高考链接】

_____such heavy pollution already, it may now be too late to clean up the river.

A. Having suffered B. Suffering C. To suffer D. Suffered

【答案】A。

【解析】Having suffered "已经遭受到污染"，其逻辑主语是the river。

考点5. operate vi. & vt. 运转；操作

They set up an operating table in a small temple.

Do you remember how to operate this recording machine?

你记得怎样使用这个录音机吗？

operate vi. & vt. 操作;经营；管理 ；运转