试题题干
Translate the following sentence into Chinese.
To teach a dog this skill, the master makes a simple trail by walking some distance in a straight line.
参考答案
试题解析
考点：make a simple trail做简单的记号；walk some distance in a straight line沿着直线走一段距离。
句子结构：To teach···作目的状语，主句为the master makes a simple trail，by walking···作伴随状语。