检查修饰语是否放在正确的位置上。
例1：
a) Without television, people can't get information which comes from other parts of the world immediately.
b) Without television, people can't immediately get information which comes from other parts of the world.
分析：a) 句子中，immediately 显然放错了位置。是"得到迅速从各地传来的消息"，还是"迅速得到从各地传来的消息"?意思含糊不清。
例2：
a) At the age of six, my father began to give me English lessons.
b) When I was five years old, my father began to give me English lessons.
分析：a) 句子，At the age of six 放在这个位置上，变成了"我父亲六岁的时候"。改变说法，可以解决这个问题。
例 3:
a) To improve one's writing skill, regular practice is necessary.
b) To improve one's writing skill, one must make regular practice.
分析：不定式短语的逻辑主语决不是regular practice，为了把逻辑关系表达清楚，要么把不定式短语改成If one wants to improve his writing skill，要么把主句改成one must make regular practice.
