重点单词：
1、shift
n. 移动；变化；手段；轮班
vi. 移动；转变；转换
vt. 转移；改变；替换
He stopped, shifting his cane to his left hand.
他停下来，把手杖移到左手。
2、triangle
n. 三角（形）；三角关系；三角形之物；三人一组
This design is in pastel colours with three rectangles and three triangles.
这个图案色彩柔和淡雅，有3个长方形和3个三角形。
3、stretch
vt. 伸展,张开
vi. 伸展
adj. 可伸缩的
The procession stretched for several miles.
游行队伍延伸了数英里。
4、rotate
vi. 旋转；循环
vt. 使旋转；使转动；使轮流
adj. [植] 辐状的
The earth rotates around the sun.
地球围绕太阳旋转。
重点短语：
1、warm up
v. 热身；变暖
He blew on his hands to warm them up.
他哈气暖手。
考考你（翻译）：
1、他从一只脚换到另一只脚。
2、它的大致轮廓是一个等边三角形。
3、这是一段非常危险的路。
答案下期公布：
上期答案：
1、He used his influence to get his son into medical school.
2、What can you do to start over today?
3、Car owners were asked to cut down travel.