arise，rise，raise的用法：
arise (arose, arisen) vi. 呈现, 出现；发生， 产生；起身，起立。无被动语态。常用短语：arise from / out of sth.由……引起；因……产生。 如：
How did the quarrel arise?
争吵是怎么引起的？
They are talking about problems arising out of the lack of communication.
他们正在谈论由于缺乏交流而产生的问题。
rise（rose, risen）vi. 上升，升起, 升高；上涨；站起来。说明主语自身移向较高位置，常用于日、月、云、雾、烟、蒸汽、河水、温度、物价以及人的职位等，无被动语态。 如：
The moon has risen above the hills.
月亮已经从山上升起。
The river has risen by several meters. 河水上涨了好几米。
raise vt. 举起，提起；抬高；筹集。说明主语发出的动作是要作用于其它事物的，往往有使物体达到其应有的高度的含义。可用于被动语态。如：
Heavy rain raised the river stage.
暴雨使河水水位升高。
The boss promised to raise her salary.
老板答应要给她加薪水。
[小试]
I. 用上述动词的正确形式完成下列句子。
1. He ______ and walked to the window.
2. He ______ his hat to me as a sign of respect.
3. The birds also attack crops when the opportunity ______.
4. The people’s living standard has greatly been ______.
5. Her temperature is still ______.
II. 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. The prices are ______ fast these days. Nobody can get the prices ______.
A. going down; to bring down
B. rising; bring down
C. raising; bring down
D. rising; brought down.
2. They’ve ______ up to 20,000 yuan for the Hope Project.
A. rose B. raise
C. raised D. risen
3. When the question ______ at the meeting, no one could answer it.
A. rose B. arose
C. came D. raised
Key:
I. 1. arose / rose 2. raised 3. arises
4. raised 5. rising
II. 1-3 DCB
